Program, Maximus or eupho?

I’ve been using a hst for a a few months now and I’ve gotten to the point to where I can almost feel something building up but can’t really hold it if that makes sense. I feel like I have to permanently have my muscles flexed to 50% to even feel anything and don’t really feel anything if I don’t. Have a read a few comments about people in the same boat having more success with some others. So far I’m kind of leaning toward the progasm/maxi because of the “fullness” people have talked about. But I’ve also hear nothing but good things about the eupho and I’ve gotten pretty good control of my pc/sphincter muscles over the last month or two. So I guess I’m just curious what some others think.