I prefer rush as they are decently long matches. I started off playing recon a lot, but then I gave the other kits a try. I now prefer Medic, then Assault, then Recon, and Engineer last. When I first played recon I did sniper/spotting/etc a lot. After playing more up close an personal doing other kits, I've started doing more recon with shottys and c4.
My win/loss ratio used to be pretty bad because even as sniper I would try to defend/attack the rush points, but you just don't have the weaponry to handle that. So if you get a sucky team you were a guaranteed loss
. As medic or assault though, you got a great chance setting off mcoms and defending them solo, even more so when you team up with a friend and talk on skype etc. Since switching to other clases more often my win/loss has skyrocketed and is close to breaking even.
Just went for the all weapons bronze insignia, only to find its bugged. That hurt my kd a little since I had to use a lot of weapons I disliked
. Also recently got one of each pin
.