Our contract was up (fiance and I) and I got this phone, she got the Sony w580i. I am not a power user (don't use 3G or internet),I use the phone for 3 basic functions: make calls, listen to music, and sync up to outlook calendar. I had a Razr before this phone.
Things I like: Music Player: I have a 2 gig microSD card and some bluetooth stereo headphones. The trade-off here is sound quality vs. no wires. The quality isn't as good as a dedicated mp3 player with wired headphones but I need to be mobile for my job so I'll take the wireless.
Camera: Compared to the Razr I had (no megapixel) its great.
Things I don't like: Compared to my fiance's Sony, online support sucks. I had to search and search for some sort of phone-computer sync program. There isn't one specific for this phone. I found one for a different one and it worked. Sony has a great website with all kinds of games, etc.
The main reason I wanted to sync was the Outlook Calendar. Unfortunately, there is a character limit to what the phone can hold and its not very much. Messages get cut off and the message itself scrolls really slowly. There is probably a way to scroll faster but I haven't found out how.
On the Razr it was really easy to make a song a ringtone. With the Samsung you have to create some sort of group and then assign a song. It's too much of a hastle and I haven't done it yet.
With this phone, you have to buy a USB cable (Ebay, $5). With the Sony it comes with this and you get headphones also.
I didn't get the Sony because I thought it was too flashy, but I would probably get it instead now. This phone wins out on 3G (if you need it) though, and it doesn't have expensive proprietary flash memory. Its not a bad phone, but for the features I use, it's not a great phone.
