I use Smartbuff as well. The biggest bug is that it actually doesn't work until you open the Smartbuff menu and close it. You only need to do this once though and this happens only for some toons or spells, not really sure. Kinda annoying, but not that big of a deal.

I haven't tried ZOMGbuffs yet.

What about Vuhdo, someone was talking about that in another thread and I noticed it was buff options. Is it for raids only?