The i855 would be better because it has camera to it and the buttons are easier to press but that's my opinion.Get what you feel is better.The i855 cost about 274 or something like that.You don't have that long to wait either because It will be availible November the 1st.

07boi...the choice is ultimately your to make...I would suggest you had down to the local Nextel/Sprint store to actually pick and hold both handsets...make a decision base upon the factors that make you happy...sad to admit it but a phone has become a very personal item that bears some effort and time put into choosing which one sreams out at you!
The i855 has the LARGE color screen and the camera and will retail at around $225, the 835 has a unigue frame and style that is similarly designed like the i830, 830 roxy and the i860 w/o a camera...soooooooo

Good luck, Jess