I agree with this but Achtung Baby still is my favourite cover. That's probably because at first you don't even notice that the band is on it.I have a predilection toward album covers that don't actually feature the band themselves on the cover. Having the band on the cover doesn't automatically make it a bad cover...you can get creative with it, but on the whole I find it more stale than using an alternate image.
I don't know, I just think it's cooler to leave yourself off the cover.
No Line On The Horzion comes second, then probably Zooropa.
Two extremely bad covers:
HTDAAB and October.