I'm currently using a Tru-Glo Extreme 5-pin sight, set at 20-30-40-50-60yds.
Fairly inexpensive and is holding up really well......bright enough that on sunny open 3D shoots, I'll put electrical tape on the guard to cover fiber optics and dim them a bit for less glare.
Knowing my pin gap, I'm able to rough guess the distance of an "average" deer or elk by number of pins covering chest. Before I had a rangefinder I used to keep a cheat sheet taped to inside of upper limb
I have a low end Tru-Glo on my old Firecat and do not like the cheap fiber wrap pins at all......to me there are not much better than the old painted tip steel pins I used back in the 70's.
A lot of good sights out there. If my current sight gets damaged or I decided to put it on my old bow, I'll upgrade a bit to one of the better Tru-Glo w/0.019" sights or maybe a Spot-Hog??
2009 Martin Bengal M2 Pro Cam w/factory STS & CCS.....66lbs, 29" DL, 422gr @ 272fps, Winners Choice string/cable, Trophy Taker drop-away Rest, Scott Release
1996 Martin Firecat XRG Pro Series w/Ultra Sonic wheels.....69lbs, 29" DL, 465gr @ 245fps, w/fingers & Martin leather glove