Plan to upgrade tonight, and swap over from my 512mb miniSD to a new 2gb miniSD that I just got today. w00t. Will post results later hopefully.

----- edit ------ update! --------

Okay so the install went perfect and quickly. It said it would take 20mins but it took only about half that it seemed. You do have to reconfigure all your settings on the phone, but that is a small price to pay. There are of course various software apps out there that will backup/restore those settings but I cannot confirm if and how well they would work.

For me, I have a few 3rd party apps that I reinstalled, but I used this chance to clean things up a bit. I also have a backup folder with all the CAB files I use and some other pertinent data, so for me to recreate my phone if it were to crash tomorrow would take me under an hour easily and I'd be right back where I started.

Anyhow, onto the meat. This upgrade is GREAT! The VC/BT functionality alone makes it worthwhile -- and the fact that it reads my txt messages to me when I get them is a super fun and cool feature I'll love, especially when wearing the BT headset. There are other small misc goodies like the LCD outer screen that I enjoy, and feel this is worth taking the time to upgrade. Enjoy!