Excellent call 57. All true as far as I can see. Elite is the best, but at a premium correct. I bought the Elite 60" Sig Monitor and so glad I stretched my bank acc't to do so. Still blown away evey time I sit down in front of it!
After all, you will have only ONE of the TVs in your house ie. nothing to compare it to day in, day out...so the Panny is fine if you want the bigger size. If you demand absolute picture quality etc. then go for the 50" Elite.
Put it this way...I've seen the new 55" Sony XBR8...sure, great for an LCD but still can't match an Elite 60" and you're giving up 5" of size for the same cash. No thanks.