If I remember correctly there was a thread on l4dnao a while back where people posted their autoexecs and such. There are also peoples autoexecs still floating around on the web that I think still are available to view, but I decided to sort of re-make this thread from l4dnao. Heres the exec I use for l4d2, before you say anything I know there are several commands in there which do absolutely nothing, so don't tell me that . I am too lazy to delete a few lines of text which I copied from old execs of mine from other source games.
http://pastebin.com/S8f3xKPs
i used to run uzi with 40 lerp and shotty with 16.7, but now i use 16.7 for both so i could rly take that .4 out, just havn't rly looked at it :p