JBL offers great value for your money. There is a great deal of history and technology behind those speakers. The Studio L-series gets great reviews for good reason. I also think they're pretty handsome. But just remember that speaker preference is highly subjective.
With regard to all the "refurbished" speakers that HarmanAudio sells on the fleabay, I have found them to be primarily brand new speakers, only sold as refurbs to satisfy their dealer agreements. I believe they use that site to sell overstocks and phase-out gear.
Lastly, I strongly agree with Seth. While JBL makes fine speakers, their subs are lacking and really aren't very competitive with the likes of SVS and Hsu.