I just got the flare gun, pretty awesome...but I can't wait to get the backburner...50 health plus the crits from behind? Definitely worth it.
But I've found the best new thing is the air compressor...nobody expects it yet, so I can return tons of rockets and nades, and separate ubers or at least hold them back...it's really useful.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )