I'm looking for shared exchange hosting.

I see devstreet.com and simlab.net offer service. How are these guys? Are they reliable?

Datapipe.com offers it, but you need a dedicated host (much more $$$). I'm only going to have 10-15 mailboxes, so that's overkill.

Any recommendations on who to look for and who to avoid?

Any sites specialize in discussing shared exchange providers?