Carl, thanks a lot for that constructive post. I can go with the 81's and after re-measuring the cubicle for the center channel I find that while the width is only 17" it can accomodate an 81 as well. However, I'm really concerned about the negative comments (from others here) re placing those speakers inside the entertainment center cubicles - since (based on your photo) you seem to doing something similar, what's your take on that? If doing that truly will impact their openess, presence and staging, perhaps I should 'campaign' for a couple of narrow towers to place on both sides of the entertainent center. However, the center speaker would still be inside a cubicle and as you say that's the 'key' speaker in a 5.1 home-theater setup! And even if I can sell my wife on a pair of narrow towers for the fronts instead of the 81's, there certainly would be more of a timbre-matching issue with the RB 81 center-channel! [*-)]
As for my Forte's, there is no other place in our house (single floor plan and no basement) for them, not even in our 2-car garage. Actually, I feel pretty good about giving them to my son (who recently got his own 'pad'). He has always loved the Forte's and while his and my taste in music aren't the same, he nevertheless has 'an ear' that appreciates those speakers.
Aaron