I run the Tommy Hogg as well and like it better than any other sight I've seen or used. I use it mostly for hunting, but I shoot 3D in the summer also, albeit not at a competitive level. I don't have experience with the others, but have contemplated trying the Hogg Father. Kind of second guessing that now that I see all the replies here.
Don't want to sidetrack the thread, but the only thing that bugs me about the Spott Hogg sights is the noise or rattle that you get when you shoot without the micro adjustment knob locked down. I have asked Spott Hogg about this, thinking mine has a worn out bushing or something and they just tell me that it's designed to be shot in the locked down position... Who the heck hunts with it locked down??? Nobody that I know of would make a course adjustment while hunting and then lock it down, which is noisy in itself. I don't remember it being noisy in the beginning, but probably never noticed since I put it on a new bow with all new hardware and it was vastly quieter than my last bow. It wasn't until I shot next to a buddy and noticed how much louder my bow was than his and started isolating noise sources and discovered that when I tap on the dial, it would produce a slight rattle. I've never been around anyone else with a Spott Hogg sight to compare mine to. It's a real nit-picky thing, but still overall love the sight.