I am trying to assemble an HT/TV only 7.1 system. After a fair amount of research I am close to buying one of two types of systems.I would like to get some advise from some knowlegable people since this is a very large expenditure for me. First the room is a little difficult. 16x16x8. Wall to wall carpet. An open kitchen to the left with only a low counter separating the 2 rooms.Cloth levelers covering an 8'sliding glass door and 3 other windows. I am trying to choose from the following :1)3-M&K 150 P's up front.The powered speakers would be connected to the balanced inputs of the Anthem AV20 OR the B&K 50. The 4 rear tripoles would be connected to a 4 channel B&K or Rotel Amp.The Sub would be the M&K 350. Any other suggestions for speakers or pre/pro/amp? My second choice was to go with the M&K 150's (non powered)up front.The same surrounds.I would power all the speakers with the B&K 50 and their new 7 channel amp or the B&K 507.I do want Ultra 2 processing for the receiver or the Pre/Pro. I know the 2nd choice is less expensive but my question is are most people going to notice the difference between the the 2 systems? I have heard parts of both systems but can't find a dealer who can hook up both systems for me to A/B. Finally is the first system worth the nearly 20k it would cost to assemble. I want the best system I can afford and would be interested in your suggestions.I do love movies/TV. Thank you for your time.