You want a Tuna with good taste ?
"Most popular" would be a bit hard in FT. If you could pry loose someones prized Tasco Custom shop 50x & turn it down, THAT would be a great HFT scope indeed- tried one- not the latest greatest but best.
Let it be known at a match you NEED a scope, believe I was using a Simmons White Tail classic (with the BIG mil-dots a rabbit could hind behind) and a fellow shooter who was serving Lunch later at his house said he might have something. After lunch off to his shop complete with way over 100 used scopes.
Also something to be said for how Paul in LA likes to run shoots, type rules. Pick a focus range and never touch it again during shoot.(which would lend to an FFP if spending money). Shooting a regular fixed 10x and naturally the right shooter can take 1st.
Do just go shoot, try, and ask around.
Or, does your budget allow you to go big$ ? March? Used hand select Tasco custom shop.
John
John