The Cosmos is a classic. Its very well known here, and you will find lots of reviews on the internet.
I find it useful to just do an image search for the case and see lots of completed builds that use it.
That said, there are maybe some newer models that have more features. What are your priorities in a case? Aggressive, sleek, giant, cooling ability, build quality, water cooling, air cooling, etc?
In this price range, I've been very happy with my Silverstone Fortress FT02, but its a very different beast than this case.