It's maligned online, but I've always loved my Tempest. You can use it like the Elektrons in 16 Steps mode (in the six years I've had it, I've never used that mode), but it's really easy to just change the time signature and bang out a beat in 3/4, 5/4, 7/4, whatever. I also don't like the page issue you mention on the Octatrack. I've spent more time than I care to admit counting beats out on there when I've got a non-4/4 sequence.
Having said all of this, if you just want x0x style kicks, snares, whatever, the Tempest may not be for you. I've never had an issue getting big kicks and other sounds I really like out of it, but I've seen a lot of (I think unwarranted) complaints about that sort of stuff online. It's also excellent as a 6 voice poly, and excels at making more "unusual" percussive sounds.