in general i am a big fan of generics. i rx generic oral & topical medications every day. and the generic contact lens solutions are also fine most of the time for use with plastic contact lenses.
but i am NOT a fan of generic contact lens solution for use with SILICONE contact lenses like acuvue advance. there was a recent study done:
http://www.staininggrid.com/
go look at that chart. according to that study, 16% of acuvue advance users had significant clinical signs of corneal irritation/damage ("staining") when they used wal-mart brand multipurpose contact lens solution. thats quite a bit. only 2% who used acuvue advance with aquify had this problem (not statistically different from STERILE SALINE). so i guess what i'm telling you is...i dont like it. i would tell you not to use a generic contact lens solution with any silicone hydrogel like acuvue advance. stick with the aquify, or choose another solution on the chart that is in the "green".