Anyone use the GX pump?

It looks a lot like the four brothers pump, but the four brothers( might be uncle's) pump has a moisture trap on air hose ( after compression, just before entering the gun) rather then before compression ( were the moisture is going to be extracted) it just seems to me that would be better. And it’s only like 50.00-60.00 if I remember correctly. 
 
I had it. It worked really well! I bought it just to use my rifle while I waited for my air tank and Hong Yeng to arrive, then I returned it. I would've kept it if I was into hand pumping, though.

I might do the same thing. I’m more of a hunter than plinker, though. After I’m sighted in and pick my best pellet, I’ll probably shoot less than 500 shots/year. I would think the hand pump would be fine for that.