As a whole, there is nothing out there as of right now, that even makes me think about selling me Tempest.
Maybe a Tempest2 (updated memory, processor etc...)
What I love about the Tempest as a whole? There are so many ways I can play it. I usually use the 16 Steps mode for my kicks, congas etc, but almost always do live recordings for my synth, bass, cymbals/hats/claps/bells sounds.
Once I got used to the Solo/Mute and the 16 Sounds and 16 Mutes buttons, then the LIVE factor really took over. I find it so easy to operate it and manipulate the sounds on the fly. Of all the drummachines I have touched, this feels the most like an actual instrument, like a real synth, not like a computer that just shoots out sounds.