Puchbox lets it rip. D16 has long been the instance for x0x emulations of any kind. It's hard to find better software, although StiX from Xils-Lab also comes across as very fat. The closest competition, however, would be Rob Papen's BD-Punch, which is a bit cheaper and comes with 6-fold drum stacking and is hard to beat in terms of features. Vengeance Metrum, Sonic Academy Kick2 or Plug-in Boutique BigKick also pack a punch.
But I don't think any of them struck the balance between immediate access and sound-shaping possibilities as well as D16 Group Punchbox. The complete MIDI-fication of really every parameter makes it more of an expressive instrument than the other plug-ins.