I own an Antec 900, and it is nice for the price. Where the Antec 900 fails is catering to the enthusiast crowd. I myself am looking to replace my 900, not because it's really ugly (it isn't), not because there is something that I can not fit in it (there isn't anything I want), not because the cooling is not great (it is), and not because it has failed to do something it claims that it can (it has not). The reasons I am looking for a new case may seem trivial, and they are, but they are my reasons regardless. First, the Antec 900 is said to be the case used most in all custom computers in the USA. Whether that is true or not I do not know, but I do know there are over 2000 reviews on Newegg.com for the Antec 900. It is an extremely popular case and that, to me, takes all the personalization out of the computer. You can not create a thread on this forum about computer cases without the Antec 900 coming up in one way or another. Lastly the Antec 900 is truly a nice case, but the lack of a few features that I enjoy, the slightly cramped amount of space, and the rather dull looks (after seeing it a thousand times) kind of kill it for me. The Antec 900 is a great case, but if you are heavily into computers, or think yourself an enthusiast then it may not be for you. To buy an Antec 900 is to make a sound investment in something thousands of people enjoy worldwide, to me though that is a problem.
[end rant]