LMAO
A lot of good discussion here, and amusing as always.
Twinkle Star is the winner for me.
It seems most, if not all of the cheap ones suffer gauge failure and housing failure from poor casting or freezing. It's a cr@p shoot on all of them so why throw more money at it than needed. The gauge can be replaced with a better quality one for ~$15 if needed. If the regulator starts to act up I'll just throw another $25 at it.
We are pedestal hoppers, usually FHU, so we are always connected to a water supply. A regulator is cheap insurance and is required at one of our hangouts. We use the pump to flush while on the road and that's about it.