Airbags- built in air compressor or manual fill?

I only carry my camper occasionally, and sometimes tow a trailer behind it. So my airbags aren't always at the same pressure. I used to fill them with the external valves and my garage air compressor, until I got the onboard compressor. The convenience of the onboard compressor is well worth the cost, IMO.

Came across this on youtube:
https://www.youtube.com/watch?v=ydQMZ_fAUH0

I love gadgets. If you have plenty of money and like gadgets get one for sure. But for air bags you don't need it. Might come in handy for airing up a tire. When I use to have them I would put on the TC and pump them up to where I wanted them and that was it. They are good for leveling the load. There certainly are other options. I have used timbrens and now lower stableloads from Torklyft. I like both of these products. Cheap and work well.

I rarely change my pressure. I'd say never, but I guess I've changed it before. They hold a tiny bit of air, so any pump works.

I just use a $10 bike pump, you buy a lot of them for the price of a compressor