I've had 2 24" LED LCD's that have been problematic from day 1. Both have had their panels replaced more than once, power supplies, banding issues, etc. I've had one completely replaced in Sept. 2010, and has had the same issues as my second display. Thankfully I have AppleCare. I've had them running on my 12-Core Mac Pro, tested them out on my Mac Mini and MacBook Air, it's definitely been a display issue and not graphics card. I miss the previous CCFL LCD's, the 2 23" displays I had lasted ~8 years. After one of them went down today, Apple approved full replacements with 27" models. Has anyone experienced issues with these displays? I know the 24" panels have had issues, I'm hoping the 27" displays are improved. Thanks for any feedback!