illuminas arent bad, they have a lifetime warranty. i wouldnt recommend dropping them lower than 2 inches, i hear past that they tend to get leaky seals etc. kyb's are also nice, i have driven a car with some and i loved them. alot also has to do with the spring setup u decide to use. h&r are good, so is tein, eibach and pretty much any big name brand. i would also advise not to drop past 1.5 or else your toe in probs will not be fixed by an alignment, youll need a camber kit.