I will be ordering a new receiver soon and want to get some new mains while I'm at it. My sub is a Maelstrom X 18 in a ported box tuned to about 12Hz. My budget is fairly limited because I'm getting the new receiver as well. Right now I'm looking at the ALPHA-8 MINION, FUSION-8 ALCHEMY, the FUSION-8 ALCHEMY MTM, or FUSION-10 PURE. If it is really worth it I could probably go as high as the FUSION-12 TEMPEST, but like I said I'd prefer not to spend that much unless it would really make that much of a difference. I have an acoustically transparent screen so I don't need a specific center, all three speakers will be the same. My room is 25ft long, 11ft wide, 7ft tall. The seats are 10 & 17ft away from the speakers. Also physical size of the enclosure doesn't matter as they will be behind the screen and I have more than enough room there. Room is used for about 90% movies, 10% music.
http://www.diysoundgroup.com/waveguide-speaker-kits.html
http://www.diysoundgroup.com/waveguide-speaker-kits.html