Well, I'm currently an administrator at http://www.trap17.com and have my site http://plusone.trap17.com hosted there, and I must say, it's a very well set up host. It's a little over a year old now, and still running strong, with good management, and support staff. The community's pretty nice as well. I'm in charge of a lot of stuff, but focus more towards the graphics sections, as that's kinda my area of expertise.

As for bad hosts, well, my previous host was http://www.sferahost.com which I was also an admin at...it started out pretty nicely, but after the second owner change, it pretty much got abandoned. Apparently it was "hacked", but I don't believe it. Anyway, it's still down now, so no worries about getting stuck there.