I have just upgraded from the old motorola v3 razor so pretty much anything would be a improvement. I have had the samsung for a week now so it would be hard for me to comment on reliability. However it seems well built and sturdy. It weighs not much and is very responsive.
The phone is simple to use and it is easy to adjust settings if you need to.
The internet is not free however is fast and allows you to go on facebook or whatever your internet needs. however although you can go on youtube the video quality is always very poor.
The camera is good and has different settings and effects such as panorama. The widgets are good although pretty useless.
Looking through photos is very similar to the ipod touch and phone and you can tilt the phone on its side as scroll through the photos with your finger.
There are some games on here such as a motion sensor dice throwing gam. However the main games that come with the phone are demoes which include Tetris and monopoly.
The phone has google maps which works very quickly and well as-well as MSN built in.
The only thing bad about this phone for me so far was the fact that when i first got it i found it extremely hard to get the back cover off to put the battery and sim card in however it gets easier the longer you have it.
For its price i would say this is a excellent phone. and i would definitely recommend it.