I agree with mazer here regarding the JBL's. Personally, I would go for the Paradigm Studio 20 v.4's or the Ascend 170's. Many claim the 170's are just as good as the Studio 20's which is an awesome deal if this is true. Was going to go with the Ascend speakers myself, but got such a good deal on my Polks. We do need, however, a bit more info as mazer has already asked about.
Cheers,
Phil