so i see this got bumped.. well i ended up going with the majority and getting the p21s. ive had em 4 about a week and a half now and i love em.. im mainly a search player and these are AMAZING in search.. i also played in some ffa matches with em and these are definitely beast in that gamemode. although in team games like tdm, domination, etc. theres usually too much airsupport and explosions to hear much, theys till have theyre moments and u can usually hear enemies if theyre close enough (ie. sneeking up behind u) and they can save ur a$$.
now that hiss that some ppl complain about.. i notice it too when at the game menu but when in the actual game, u dont notice it at all.
overall, these are great and i love them. thanks to any1 who gave input