Basically the heading says it all. I'd be looking at the comparable size Pci Plus vrs. the Ultra. Although the on-board amp is a nice feature and actually provides more power than the Sampson 1000, just look at the woofer the Ultra houses. I'm sure its just astetics but to me the normal PC woofer looks beefier than the PC plus woofers, like I said I'm sure the plus out-performs the Pc as stated on the site, but is the Ultra really worth nearly twice as much? A little more info....I'm in a pretty large 'family' room type setting with ceilings that run from 9ish to 16ish ft tall in a sloped peak thing. The woofer would be in the corner of the room with the lowest ceiling height. Cathedral ceilings I guess. Any and all suggestions are welcome. all right back to the grill, although its been so hot here in Central Va, I really didn't have to light it!!