Personally other then initial cost I find airsoft to be cheaper over all.
After spending you 100 a day on paintballs do it for a week and there is a gun in the value there.
I used to PB quite a bit when I was younger and when I made the swap that was my justification to my girlfriend. Even with the 2200+ purchases it was still cheaper over the 4 years then playing PB the same ammount.
Yes the accuract is a whole lot better and if your in Calgary then check out JOC (http://www.jocairsoft.com/forums/index.php
) They are the Calgary group. There are a few others but they are the larger one.
They have a very active group.