This seems to work pretty well. Can't say I've done an extensive test, but for everything I've needed so far, it's great.
Best thing about it is it works on the iPad. As far as I know, the only editor that works without having to type tags (simpleCE works well, but you still have to type some tags - ever tried typing '' on the iPad?!).
This is a great tool. Really powerful. It's a release-candidate, so there are a few rough edges, but it puts a lot of power in the hands of unskilled occasional programmers like myself. Best thing about this though, is the support. I found a problem, they fixed it - I couldn't believe how responsive they are. Fantastic!