I really don't see any difference in the 755 and 700p other than the internal antena. The infra-red port and mini SD slot are in different places. So why upgrade. It just doesn't seem like it's worth it for me. I love my 700p over the 6700 because it is 100% multimedia compatible with Sprints picture/video mail system! I did have 3 6700s. These hi-tech phones will crap out on you so you better have insurance. The speakers always goes out on my phones so I couldn't hear the ringer or who's talking. Yea, this is my second 700p but I love it! If this one gives up on me Sprint will have to give my the 755! I also have a hell of a plan too! 1000 anytime minutes, unlimited night time/weekend minutes (starting at 8:00PM), unlimited PCS to PCS calling (all nation wide) for $40 + unlimited vision pack with picture mail for an extra $10/month! With tax it comes out to $59.59/month with the replacement insurance included. Pretty nice hu?