My Topeak Joe Blow booster floor pump was my worst purchase ever. The cheap plastic head would grab on to valves and never let go no matter what. I gave it one more chance by buying the metal Twinhead DX upgrade kit they sell, and now it's the best pump I've ever used. Solid, reliable connect and disconnect even when blasting 100 psi all at once to seat tubeless tires beads.

Pressure gauge is nice and big too. Only drawback is that the pump is too tall and huge for my daughter to use. So I still have to keep another floor pump around for when she wants to help.

Looking back, I'd probably only buy it if you need the tubeless functionality, though. The head makes the pump, apparently, and it's easy to find a different head or even use their metal head kit on a different pump.