I got this phone in November of 2007 after a streak of 5 LG phones. I was stuck on LG but decided to mix it up and I'm glad I did.
My cell phone service is through Alltel, who are known for good reception. I have had a total of 4 dropped calls in 3 months, which isn't bad at all. The physical design of the phone isn't bad. The only issues I have with it are that the outside button for the camera is also the button for the MP3 player. If you hold it down when the phone is shut the MP3 player starts playing whether the phone is on silent or not, which can get annoying. Also, the faceplate for the front has a dumb design because the faceplate comes off the but the strip in the middle doesn't, and can get scratched pretty easily. Also, the flaps that cover the plug-in for the charger and the memory card slot can be difficult to get out if you don't have nails. One issue I had with this phone is that I had to go out and buy the memory card as well as the adapters to get music on it which was about $30. (I can't blame Samsung I guess. They need to make more money!) The main display is nice and big compared to some screens out there. Also, the phone lasts through anything. I've dropped mine in a full sink of water and pulled it out and turned it back on and haven't had a problem with it at all.
As far the features on the phone go, I give it a great rating. The setup of the music player is really nice, and the settings you can change as far as the theme and dialing font and clock format and all those things are pretty clever. The music player has good sound considering it's a small phone WITH an MP3 player, not an actual MP3 player. The volume is good and the sound quality in calls is amazing. No echoing or lag. The vibrate is a little weak but the volume makes up for it. The buttons are easy to press and texting is a breeze on it. The T9Word is pretty decent also. The camera quality isn't awesome but it's good for people who just like to have a camera on their phone. One little thing about this phone that I love is that the front display has a bunch of different color options. It definitely gives it some personality.
All in all, this phone is a great buy. I've had more than 8 cell phones and this one is by far the best I've had. I recommend it!