All the pumps mentioned are from the same company, check their portfolio:
https://cycplus.en.alibaba.com/productgrouplist-924413207-2/Smart_Bicycle_Pump.htmlALL of those (Aliexpress) pumps are from the same Chengdu company. So it does not make any difference in general which brand you choose, you pick your desired budget/battery size/geometry and can buy Airbank, Anoutway, Topump, Peakspeak, dwndpump, Ridingmark, or Cycplus. And they also OEM for Muc-Off, Rockbros, etc.
I am testing an Anoutway AT1 Pro right now, it has the exact same specs size weight as a 40% more expensive Cycplus Pro pump and the mentioned Topump TB2 Pro (450mAh), only the TOPUMP TB2 Pro seems to be a tid larger in volume (131 vs. 96 from Cyclplus/Anoutway).
About the AT1 Pro:
- So far, it does what it's supposed to do (video coming), but I had trouble when using in conjunction with Schwalbe Clik-Valve adapter - hard to get like >2.5bar when it's starting to leak in the adapter head/hose connection - Only be able to reach 3bar by pressing it with hand tight.
- No issues with Presta valves, quick (time to fill like in the specs, ~1min for 28-6bar test setup, 2 complete full fillings),
- sound is okish - like a drone,
- it's a little bit larger than I hoped for, so it doesn't fit in any in-frame storage.
- Not water resistant (as all of those pumps), so always need to be carried in a bag.