THX system
I haven't seen any reviews, but the Onkyo THX is probably a pretty good entry level system. Some alternatives might be the SVS 5.1 system or the Onix X-LS speakers with a mid-fi receiver from Yamaha, Denon, HK, etc.
In the past, electronics manufactures like Onkyo, Yamaha, Panasonic, Sony, etc. have not been know to produce high perfromance speakers and subs, but this could be an exception.