Stillen = ripoff. You can get strut bars on ebay and not pay more than $50 for both. Honestly a $200 STB and a $20 STB will not make much of a difference. Keep this in mind but this is the only real exception to the u get what you pay for rule.
Energy suspension = good
Tokiko is also good, (I like KYB AGX shocks myself)
Eibach is also good.
If you have the money, I would rather get a quality coilover setup than a spring/shock setup.
oh, also, check out
www.custommaxima.com