Do I need To spend the $700 on the new speakers or just keep what I have? Currently have Polk Audio RM2300 5.1 package. (4 RM2300 satellites, RM6200 center, and powered sub PSW350) we have been using in downstairs family room with a projection TV. Now have Samsung 46" HDTV on wall above a noisy pellet stove in living room and want surround sound experience to help hear TV/Movies above the blower noise. Purchased Denon 1611 and have ordered Definitive Technology ProCinema 600 package. (4 PC 600 satellites, PC 600 Center, 250W powered Sub.) Room is 13.5 x 23.5, but viewing area is a cozy 13.5 x 13.5. Center speaker will be in front of TV on mantle, 2 front at ends of 6.3' mantle (cannot wall mount due to drywall to brick no space for hiding speaker wire). Sub will be on floor next to hearth if i get DefTech, sub on hearth if I keep Polk Audio due to larger box. Rear speakers will be on stands at each end of viewing area running through rocketfish wireless system (cannot wall or ceiling mount because of ceiling heat and pitch of roof not allowing drill to get into wall without destroying crown molding).