If you want the ability to add more fans to your case check out this one: http://www.newegg.com/Product/Product.asp?Item=N82E16811196019
This one has 2 spots where you can mount 120's on! I'm hopefully going to get this one, and it's pretty cheap too! Reviews (If you google this case) say that it is a very sturdy case, besides the doors. Just be kinda careful with them.
The Aspire X Navigator has a full size side window, five case fans and port for sixth, changeable front panels, lockable and many more features. Best cooling case I ever came across.
The only negatives are the fans are louder than others and the lights are very bright.
Check the specs @ www.aspireusa.net
I love this case it keeps everything extremly cool and holds it great Thermaltake tsunami aluminum atx case
nice locking features.
the only changes i made to it was take out the quick release pci holder things and the fan on the side i replaced with a thermaltake 80mm blue led fan so it will look cooler.
i love this case and its only a little above your budget
I really like it; easy to install into with tooless bays and the HDD bays are oriented facing out for easy access, comes with a half-decent power supply, and it runs very cool (even with only 2 fans).