I use the Spot Hogg Real Deal on my current bows. "Back in the day" I used Hoyt Micro-Elite sights, which I still have mounted and use from time to time.
For me, in a sight I first look for all metal construction. You'll see sights with "composite" or "polymer" parts and that's "plastic."
I do like micro-adjust, but don't get carried away on that. If a sight looks like a nautical navigation tool with all the dials, pointers, and levers, that's a lot going on and a lot to keep track of and worry about hunting. I've had my sight caked in mud, packed with snow and banged off rocks and tree branches. I want as few a number of dials and knobs to worry about and check in the field. It's also more to break.
I like a shorter sight that doesn't extend too far beyond the bow, if at all. I actually like my sight to sit inside the dimensions of the bow; meaning, if I were to set my bow down on it's front edge, it would sit on the limb pockets, and not the sight. That way, when my bow falls, or I fall and tumble (like happened last fall, with my bow on my pack) my sight is somewhat protected by the bow itself. A lot of guys like long extension bars, and that's fine. I just don't want to mess with carrying that in the field, and the increased sight radius for me, isn't worth it unless I'm worrying about 10 rings in competition.
Fiber optic pins used to be pretty fancy and now they're pretty much standard. They do come in different diameters and that's up to you. Smaller can be harder to see, but they don't cover up as much of the target (animal) as do the larger ones....but the larger ones show up like a traffic light.
I'm not anti-3rd axis, but I don't have any sights with it and I don't worry about it. I think it's just another feature to mess with and sell sights and I shoot just fine to 80 yards without it. Not to mention I was competing and killing animals since the 90's without it.
And I'm not a minimalist by any means. I just think there's too much emphasis on equipment these days. I've shot metal, micro adjust, and fiber optic for all this time and it's done me fine. It's the shooter and the practice that makes the shot. For hunting, get a quality sight that is easy to adjust and you can see in low light...end of criteria as far as I'm concerned.
And I always remember this--- this guy shot better than many or all of us here and he did it with equipment that we'd not even consider using today.