i am using a cm 690 for 3 yrs and the problem with it is as i add more components like hdd and gpus the cable management is pathetic ...snd it is getting too conjusted and with 7 120 mm fans it is getting hotter while playing games...
so thought of a full tower case with lots of space and looks good also.....
my budget for case is with 12 -13 k...can extend but overall budget is already given....
Wait for the corsair 750D to be available in India,it is an awesome case launched this week, should be available for 13-14k.Excellent for air as well as water cooling.Check the reviews on youtube.