To educate those of us who are still new at this game, would you tell us when you bought something new and it didn't meet your expectations. For example, you went from a low end to a higher end receiver or to separates and didn't notice that much difference or maybe you went to more expensive speakers and didn't notice that much difference. I read threads that say "I went from (insert brand and model here)to something else and WOW what difference!" But surely we don't hit a homerun everytime. What did you go from/to, and were you dissapointed?