[Reyzac]

Originally Posted by xlilmissmjx

I'm no expert in fans but here some suggestions...

For some blue fans...

Newegg.ca - COOLER MASTER R4-L2S-122B-GP 120mm 4 BLUE LED LED Case Fan

If you don't mind swapping out the blue one's currently in the CM690II Advanced for red ones or adding in red with the blue for a mixed lighting job then these have better rated airflow...

Newegg.ca - COOLER MASTER R4-L2R-20CR-GP 120mm Red LED Case Fan

I've used the R4-L2R-20CR-GPs, they are very good. Try to get as many fans in there as you can afford.
These or These kick ass too.