Assuming you were looking at Paradigm studio's. If you had to choose between the Studio 20/40 or 60 for fronts. 95% HT. Yamaha 2400 receiver(probably)Decent sub (svs or HSU) The 20's go down to 54hz. The 40's go down lower but whats the point If your crossing over at 80hz? Not too mention I want to make sure the yammie can power the above speaker so I dont know If I am better off with monitor's. I was offered monitor 7's for around $550 new.