Is it worth getting the Topeak MTB version? If not what else to consider?

not a park – it blew the seal 🙁

topeak joe blow sport is outlasting anything else I have had.

I use it for tubeless, but never noticed it being any better or worse than any other track pump for that.

The Joe Blow Mountain might be good. My Sport’s a good pump but it’s low volume, pushes almost exactly half as much air as my Air Tower 2 does, which equates directly to failing to mount tyres that the other pump manages with little effort. The Sport’s better made, feels nicer to use, more solid, I don’t doubt more reliable. But not as good at pumping.

Lezyne Dirt Floor Drive.

It’s designed with tubelessing in mind.

Large barrel and large diamiter pipe allow for a lot faster airflow.