At the moment these phones can be seen as the most capable phones that Verizon has to offer. I was able to have both in my possession for a few weeks and managed to settle on the XV6800 as my top choice. I was pleased with my trusty ol' SCH-i730, but battery life was horrific and numerous weekly hard resets became the norm after a while. Before going into detail on my review, both of these phones (6800, 760) have very similar feature sets. The only notable differences on the retail package boxes is the 2MP camera on the 6800 as opposed to the 1.3MP on the 760.

Performance:
Both seem to be righ about on par. The 760 might be a tad faster, however I am honestly unimpressed. I expected to see something much faster than my 730, but the difference was only slight. Part of my discomfort was having to wait for the screen orientation to change every time the keyboard is exposed or hidden. This is the same for both phones.

Physical Quality:
The 760 is sturdier than the 6800. The sliding mechanism, feel, and weight of the 760 make it feel solid in your hand. The battery cover on the 6800 is the flimsiest piece of plastic I've ever seen on a consumer product, however I haven't heard any reports of damaged covers. It is somewhat difficult to swap batteries on the 760 (no battery cover door). I thought I was going to break the tabs every time I had to install a battery. The sync/charging port on the 760 is covered with a rubber plug when not in use.

Battery Life:
First of all, the 760 is shipped with a standard and an extended battery. The 6800 only comes with one standard battery. I wasn't able to fully test both on the 760, but battery life is much improved over the 730. It appears to me that both phones should last you at least a full day before needing a recharge (~2 hrs talk time, 10 hrs BT, 1hr data, 20min e-mail check interval). According to comments in forums here, however, most agree that the 6800 has the edge on battery life over the 760.

Camera:
1.3MP on the 760 vs. 2MP on the 6800. Quality is significantly better on the 6800 for obvious reasons. A plus for the 760 is that is allows you to use the numeric keypad to change camera properties without having to touch the screen as is necessary in the 6800.

Wireles Protocols:
Both phones have bluetooth and wifi. The 6800 has what appears to be short-range IR, and a button on the side of the phone that is linked to "communications manager". This program provides a very simple way to enable/disable all wireless protocols for the phone. On the 760 you need to access the menu via on-screen shortcuts. And yes, there are programs out there that let you remap buttons to make them do whatever you want, but the 6800 does this right out of the box.

Keyboard:
Both have QWERTY keyboards, but the similarities end there: The keys on the 760 are sturdier, smaller, and have a rubberized texture to them. Those on the 6800 are larger, softer, and are plastic. The 760 has an external number pad which the 6800 lacks. The 6800 has a function key which allows you to access a number pad from the keyboard. I found it very uncomfortable to have to extend my fingers onto the number pad on the 760 when typing. The 760 also provides a function key for number typing, but they are aligned along the top of the keyboard, not as in a number pad, making it uncomfortable to use for multiple number entries. In favor of the 760, when the phone is slid closed, it is very easy to make a call using the external number pad. On the 6800, you can only use the number pad in the keyboard or the on-screen keypad. There is a dialer skin out there for the 6800 (big button dialer) that gives you a big keypad on-screen to make it easier to dial numbers when on the run.

Screen:
Some claim the 760 is better but for my eyes the difference is meager. I don't have any personal experience, but I have seen report on the forum that the 6800 screen is better in sunlight. When you press the 760 screen the LCD colors are distorted. Similar pressure on the 6800 results in no color distortion.

Memory Card:
Both use Micro SD.

Power/Sync port:
760 - Samsung proprietary
6800 - USB (similar to that used in portable GPS units)

GPS:
Claims have it that the 6800 has a built-in GPS chip that cannot be accessed - yet. Maybe in a couple months?

ROM:
6800 - 256 mb - 172 accessible for files/programs (core ROM editable)
760 - 128 mb - 54.5 accessible for files/programs (core ROM not editable)

RAM:
6800 - 64 mb
760 - 64 mb

Reception:
The 6800 usually showed less bars than the 760, however this might be due to how reception is measured on the phones. I did not see any more or less dropped calls on either phone.

Button placement:
This was the main deal-breaker for me. The 760 has buttons everywhere. I'm sure I could grow accustomed to it with time, but every time I grabbed the phone, I had at least two fingers on different buttons. They are not logically laid out and never made any sense to me. The 6800 has a scroll wheel where most of us expect the volume control buttons to be. I can pick up the phone and not have a finger on any of the buttons. The call answer/dial and end buttons in the 760 are on the edges of the phone - it is difficult to open or close the slider without touching them at some point. The power button on the 760 is in the least logical of places - on top of the phone. It took me a while to look for the power button on it when I first took it out of the box, until I finally gave up and went for the manual - a first for me! The 6800 seems to be the easiest to use for one-hand operation. For those of us that are previous crackberry owners, the thumbwheel will come in very handy.

$$
The XV6800 costs $50 more than the 760