Snells like back walls -- I just heard that from a fellow audiophile here in Charlotte who used to have a pair. Here are a few other threads that also talk to this. Quite frankly, until very recently, I didn't think there were any that sounded good close to the rear wall, but I was wrong. Enjoy the threads:
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1100271700&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1090795307&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1099265083&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1097465470&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1079404724&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1070053109&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1097710734&openfrom&4&4#4
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1100271700&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1090795307&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1099265083&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1097465470&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1079404724&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1070053109&read&keyw&zzrear=wall
http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1097710734&openfrom&4&4#4