MID TOWERS:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811163120
^A great mid tower case, with excellent asthetics as well
http://www.newegg.com/Product/Product.aspx?Item=N82E16811139010
^Another mid tower case that is quite appealing to the eyes, as well as a spacious interior, great pricing as well
http://www.newegg.com/Product/Product.aspx?Item=N82E16811139006&Tpk=650d
^One of the best mid towers around, a great case with an appealing exterior. MAke sure you know that this one is a BIG case.
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FULL TOWERS:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811163154
A REALLY good value it's a full tower case for a gerat price as well as excellent quality.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811139001&Tpk=800d
This one...I love this case almost as much as the Silverstone TJ07, it is SO much more visually appealing then the HAF series in my opinion, and you could have an amazing water cooled system here. This one really justifies its high price over cheaper cases in my opinion
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119225
Not a case I like, but its popular case so you could give it a spin. As far as I know the CM quality is OKAY but my experience using the HAF 922 was awful, and I haven't gone back since.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811146088
A beutiful case, great for water cooling and air alike, this one is a nice alternative the the Silverstone RAVEN
Personal favorite:
http://www.amazon.com/SilverStone-Aluminum-Tower-Computer-TJ07B/dp/tech-data/B000JK3ABC
I really love this case, it has served me well and is a nice piece to look at, it's aluminum construction caught my eye at the store and I haven't had any regrets on buying it.
And there you have it!
Any of these cases will do you fine, just make sure you like it and are going to be happy with it.