What are some opinions on JBL GTO638 6.5 3-way Speakers?

I have a 2dr 1995 Acura Integra LS and have two pioneer 6.5's in the front which are extremely clean and perfectly fine. I want to replace the two dual speakers that were already in it and was thinking about getting the JBL's. Im also interested in the Polk Audio 6.5s just give me some ideas! Thankss! Chase