Here is a COMPARISON between the two phones. Personally I would choose the w900i over the v3i simply because I dont like RAZR's. Most everything on the w900i is equal or better then the v3i. Here is why I would choose the w900i over the v3i. The only thing that the v3i has over the w900i is being GSM QUAD BAND. Other then that on the w900i, you get a sharper screen, get a card slot that can be expanded to 2GB unlike the v3i which can be only expanded to a maximum of 512MB, internal memory is 470MB over the v3i's 5MB which is alot more space for about average of 120 more songs or other things you might want to add on your phone, 3G UMTS if you want to use that great feature in europe, Very high quality 2MP Cam compare to the average 1.23MP on the v3i, FLASH for the camera (very useful in night shots and other very dark areas), QVGA video reso which is alot smoother then the v3i video recording (v3i video is probably same as my v635 which is decent but no where near as smooth as w900i's), walkman media player which you can use even if the phone is turned off so thats a big plus, FM radio is also something cool to have if you dont want to listen to you own songs, and lastly battery life on the w900i seems alot better. So there is alot of reasons why you should get the w900i over the V3i but if you dont want to spend the extra $290 for the w900i then by all means go for the v3i. I mean the v3i isn't a bad phone at all but its no comparison to the w900i.
W900's Price: About 640 Canadian Dollars
V3i's Price: About 350 Canadian Dollars
(These prices are from what I gathered on EBAY which is where I usually get my phones from) If you have any questions just post them and any one here including me will be more then happy to answer them for you.