Some people tend towards things like REM's post IRS years compared with what came before.
I like the last few Sonic Youth albums, but taken together they do look pretty stagnant.
Maybe it's just me, but Die!Die!Die! seem to have gone from the most vital EP around a few years ago to an increasingly diluted version in their last couple of releases.
I had a good example the other day that I can't remember now.
What are yours?