Mostly speakers, I particularly remember hating Mission's speakers in the late 80s.
When I was younger I think I fell for a common fallacy in that I believed that different was wrong - if a component didn't sound how I expected, then obviously it was wrong, and not worth bothering with.
Now, being somewhat maturer, I understand that different is just that, different. To really 'get' a different sound takes a serious investment of time and effort, and once you become attuned to a different presentation, you may decide that this change is beneficial. Of course, you can also decide that the change is a complete dog and you have just wasted 3 months of your life listening to some duff amplifier/whatever ;-)
Biggest win in recent years following a 'different' presentation has been shahinian speakers. If i'd come across these in my 20s i'd have discounted them inside 2 minutes, and would never have tried them again.