I have owned this model computer for a few years and in that time it has been reliable and quick and I still have not felt the need to go out and buy a new computer as I do not feel there is anything that it cant handle yet.
I use the system for general daily work use and for browsing the internet and playing the odd game. The graphics depend on the build you have but mine has a graphics card so handles games well.
The system has a good modern silver and black look and has plenty of air holes for colling on the front of the case.
The only problem is the Hitachi CD drive has a known problem that it begins to not recognise blank CDS in the end but it is still able to play DVD's ad write to DVD's which is very useful.
The system has been reliable and apart from the CD drive issue I have only chosen to upgrade the RAM to more so that it continues to run well which thanks to the easy to open case was an easy task to complete even for a novice.
I like this system and would have no hesitation in recommending it to everyone as a good home desktop machine.
I use a Dell Dimension 5150 at work and I have to say that I'm pretty impressed with it.
The computer is over 2 years old now and is used for 8 hours everyday, yet it's still running as though it was purchased only yesterday! I haven't experienced any slowdown on my system, everything is running just fine.
The system comes with a pretty nifty monitor which is just the right size to work with everyday, but it also good enough to watch movies on (in my opinion).
The keyboard is pretty weird, with nothing much surrounding the keys but this doesn't take much to get used to! The keyboard itself is pretty nice to use and typing on it is a joy.
The front of the tower houses 2 USB ports as well as microphone and speaker jacks.
When running, the machine is nice and quiet which is a real plus point of you've got several machines in a small office.