There is a great answer to this problem, one I have found invaluable in the past. Don't visit the forums anymore then you will revel in blissful ignorance and not spend hundreds, if not thousands on tiny changes in sound that if you had not visited the forums you probably either would have never been aware of or, if you had heard the " upgrade" without knowing it was an upgrade would probably never have been able to tell a difference!
I had a chance to hear the Rev 2's the other day as a friend just got a pair. To be honest I have no idea what most of you folks are on about. There was the tiniest of differences, certainly not enough for me to lose a few hundred bucks just so that I can have " the latest and greatest' version.
I think forums are bad places in many ways. The make us spend money on improvements that are on the whole not a lot! I have fallen foul to this many times.
Case in point. I heard the JH16's admittedly they had universal tips added so i could hear them, they sounded nice but not $860 better than my ER4S's! If they were $50 more then the small improvement may have been worth it but not at the difference they are!
Personally, if you have the rev 1's, keep them, love the perfect sound you got when you purchased them. Don't believe all the nonsense that the rev 2' suddenly lift veils, increase clarity or other such things. The differences are so small that I think they are more about justification of wasting more money than actual changes or improvements. There, I have said it, wanted to for a while but waited till I heard the new pair.
To all rev1 owners, save the couple of hundred bucks you would have lost changing and spend it on music, after all, that is what it is all about isn't it?