Bugbitten, Since your using dual centers, you must prefer that arrangement.Are there any plus and minus performance issues that you could share?

I'm told that it's ideal to have all of the tweeters at ear level. Has anyone experimented with this, possibly raising the sisplay 4 or 5 feet from the floor?
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HT:
990/770
Oppo BD83SE
Pioneer Elite DV-47A
Magnavox HDMR513h DVR/DVD-R
Sony DVD megachangers-2
Sony CD megachangers-2
Monster power centers-2
Sony 48" rear projection SDTV
Roku video player
JVC AL-A158 Turntable
Polk RT-2000s,CS-650,XS-650s,RT80s
LFM-1EX
Hsu VTF-1
12" Velodyne

Family room:
OPPO 970
Sony 32" direct view HDTV
Denon 3801
Rolk RMs