Agree. If the 58 was functioning properly I would just continue with it, but...I've got an e845 and like it a lot. I used it at home for band practice - it's crisper and more open than a 58.
But still take a 58 out to jams/gigs/etc because of the resistance or concern I get from some soundpeople. Weird. A mic's a mic and you're gonna tweak the strip for the guy's voice, one way or the other. I don't get the "I only like to use one type of mic" mentality.