Re: Should I switch from MyBB 1.4?
I find it easy to manage, and plugins generally provide all the functionality you need, but it is unstable right now there is no release date set for 1.0. So, plan on frequent updates, and, if you install 1.0 alpha, you might have trouble finding plugins that work with it since many of the plugins were written for older versions.
Explain “problems with plugins” on MyBB. Maybe the same problems exist with bbPress.