AK is really great. EG is... good
my favorite is B2K tho
Because those colonels are carebears. If you take away their best (and only weapon) they will run around cry, screaming, and pooping because thats the only way they can win.
not necessarily a bad thing
it can be good to pick one weapon that you like, and use it almost all the time. you'll get used to everything about it
that's what I did, before, with the G36C. it's not a great weapon normally, but I used it like half of the time that I was playing, and it worked out well for me
on the other hand it's also nice to have several weapons to pick from, in case of a big nerf!! (but they're probably done with most of that, by now! until BF4 comes out, that is)