I really can't bring myself to play spy, not sure why.
I do, I like trying to get them in normal play
Its strange, I play spy and pyro a lot, so I know how to counter and find out spy's, but aslo know how not to get caught by a pyro.
A damn decent medic and pyro combo are a serious PITA, they take down a sentry in no time, where as a soldier and medic, the soldier takes at least 3 to 4 rounds of rockets to dismantle the sentry and any oncomming enemies. The pyro swoops through sentries and enemies like hot knife through butter.