Well it's been 5 yrs. since my last upgrade. I'm using 3 Sierra 1's in the front and HTM-200SE'S for the surrounds powered by an Onkyo TX-SR608. I'll be receiving two service awards from where I work at the end of this week. I plan on getting the Rythmik F12SE with one award and haven't decided what to buy with the other. Maybe a new receiver or a pre-amp/amp. My room is 176 sq. ft. with 8ft. ceilings. Sitting distance from speakers and projector screen is about 9ft. A 5.1 setup for me is more than enough. I'm thinking the sub might be all I need to bring my system to life. Any input would be greatly appreciated.