GReddy is the best of the choices as far as quality and performance. Revhard is a joke and Turbonetics is good just doesnt offer all that GReddy does. Most GReddy forced intduction applications are 50 state legal which saves you plenty of headaches. Check out
http://www.integra-review.com and see what they have to say about Integra turbo kits. Do not, and I repeat, do not buy an EBay kit! The lines on them blow easily and the intercooler is known to cause problems. Integras are great little cars to boost, just make sure you do it right.
www.hondacarforum.com