My brother got the Onkyo HTS760 (6.1) and I was pretty impressed with the sound. I can tell mine sounds better, but I also spent about $1K more. I asked my bother why he opted for a HTIB and he said that he is fine with 'okay' sounds since he wanted surround sound with a small budget.

Many people here like to talk people out of HTIB systems and sometimes they're right to do so. Just think why you want the system. If you're thinking about eventually saving up and upgrading your stuff, then wait and only buy a couple things now- like a receiver and 2 front speakers, or maybe the 2 fronts and a center. However, if you're not planning on going all out with your HT, then enjoy the HTIB.

Have fun!
Eric