Which High Res releases are worth buying?

A number of A'goners have said they'd like to start a running database of releases that are worth buying. We've all discovered High Res downloads and discs that don't even live up to Redbook standards. Others are a definite improvement. Here's your chance to weigh in on the winners as well as the dogs. Inevitably, you may post a recommendation others may disagree with. Debate is good, but let's keep it clean and courteous. If we do, this could provide everyone with a great resource.