RE: Drop away or fletching contact rests?
you know, if you're tired or freezing and have to hold the bow for a long time at full draw - and you creep forward a little bit - you're changing the way the drop times - and possibly its height depending on the bow you shoot. some bows need that drop away up at the last minute - and any creep can lower the rest a little.
most accurate, i don't know - probably a spring steel, gkf infinity, nap 3000 w/ lizard tongue - something like that.
then the issue of having something pulling on either your cable or your cable guard is something i forgot to mention. i think the muzzy takes care of this - and a couple other inertia launcher systems also.
i like drop aways, don't get me wrong - but i don't believe they are any better than most fixed position rests.
we got my employee a bow w/ a nap 360 on it. now that's a quiet, dependable rest w/ great accuracy. i may be looking into that for hunting. can't believe that rest. there is no sound, absolutely none from that rest.