I really like this phone. I've had it since the beginning of September and I haven't yet had the urge to throw it against a wall, which is pretty good going for me!
I've had trouble with the slider. Because it has the reinforced back to stop it snapping easily (which is, in theory, a great idea) there is a tiny gap between the outer case and the part that slides up. In my phone, something like a bit of grit has got in there and it's now got 3 very unattractive silver scratches down the red bit. And it makes a bit of an ugly sound when it slides up, too.
The touch screen is great, it's my first touch screen phone and I've had no problems transitioning. However, friends of mine who also have touch screens tell me that it's not quite as responsive as theirs, and that you do have to touch harder for a response. But I've nothing to compare it to, so that's fine.
I love the overall design (save for the stupid reinforced slider thingy, as previously mentioned) - it looks classy and cool, although could do with being a little bit lighter in weight. The option to use a proper keypad as well as the touch-screen option is a LIFE SAVER for those cold winter days when you can't use touch screens with gloves on!
The camera has been great; this is all I use now, I don't know where my proper camera has gone! The Samsung PC studio is good, but a bit of a pain for transferring on a slower computer.
The internet on the phone is good for what I use it for (facebook) so I've no complaints at all.
Overall a 5 out of 5 for me, although seasoned touch screen users might disagree. I have a vodafone plan and, having got the phone free on a £20 contract with unlimited texts and 300 minutes, I REALLY cannot complain!