I'm up for a Verizon upgrade this month and I'm not sure which phone I want next. Right now I have an eris, it's a nice phone but gets very laggy at times and can't really function in the capacity I need it to. Like running .pdf, Power Point, and Word docs efficiently. I'm looking at the Incredible, DX and D2. I'm leaning towards the X but I'm used to the Sense UI the Eris has and that interface. The sliding keyboard of the D2 is nice but not a necessity for me. I use Swype and am used to that. What's the big difference between the HTC interface and Motorola interface?