I’m looking to buy some new rear speakers for my 5.1 system (see signature). The VT-254s I’m now using will be retasked to a second zone in the kitchen. One possibility is a pair of Audioengine P4s (see review below) which my wife likes because they are about half as tall as my Hsu fronts.
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http://stereomojo.com/Audio%20Engine%20P4%20Speaker%20Review/AudioEngineP4SpeakerReview.htm
Usage: 60% movies, 40% music, ranging from classic rock to jazz to classical. The room is 12 wide by 20 long with an 8 ft ceiling. My primary listening position is on the width axis about 2 feet to the right of center and on the length axis about 14 feet back. The rears would be much closer to me, at about 3 ft for the right rear (and almost directly behind me) and at about 7 ft over my left shoulder for the left rear.
How closely do I need to match speaker efficiency? My HB-1 MK 2 fronts are rated at 92dB sensitivity while the P4s are 88 dB.
My budget is $300/pair or less. If I bought the same as my fronts (HB-1 MK 2 in rosenut finish) the price is $360 /pr. If I go with black, they’d run 300. The Audioengine P4s are 250/pr, well within my budget. If I can stay around $250 then perhaps my financial advisor (read: wife) will be more quick to approve my next upgrade: an Oppo BDP 83.

I can go with black and the since we don’t have small children or dogs, the fact that the P4s have no grill is not a big issue.
Thanks to any and all who respond!