No problems with sh404sef agora.
Documentation was great (READ IT) They provide examples which makes it easy to set up.
I tried to migrate from VM. (I believe this part is still in beta)A lot of stuff migrated, some parts didn't. Again Beta.
The UI is intuitive unlike competitors. So your learning curve is short.
The developers are working on new features which is great.
Support (I have a pd support) Plan on 24 hours like they promise.