best VST drum/beat maker/machine on the market

I am looking for the a VST drum/beat maker/machine. I want to ad my own drum one shots and create loops Any advise?

Out of the ones I tried the full version of Groove Agent 4 is my favorite. The Cubase integration is a big advantage. The bundled content is pretty good too (it’s different from the stuff that comes with the SE version).

Geist2 is apparently pretty solid too.