If you haven't listened to any other speakers they will sound fine. But, If you have a Best Buy nearby, stop in and give them a listen. That's what I did and my wife was so unimpressed that she ok'd me to spend way more on JBL E90's.
I responded to your thread on AVS. I have the 5 series. I will sell U mine for $75.00 If U want them. I don't know where U live. I live in Virginia. Let me know...
I too have the 5 series. the bass output isn't great, but with a sub, they sound pretty good. it all depends on how much you want to spend. I got the sub(dayton 10) for xmas, and spent around 150 for the following: -sony SSMF550H towers -sony SSMB150H bookshelves -sony SS-CN550H center I couldn't be happier. I've noticed a lot of sony bashing on various sites, but for the money, I couldn't have come close to doing any better.