I use an exciter on OHs, adding harmonics in the plus 12k range. Tends to change tin to a shimmer. I also compress, and I personally don't put a high pass filter on, I like the OHs to pick up the majority of the kit, including the kick.
But yeah, pay attention to all the advice in this thread. Also, make sure the drum kit is tuned well, and it's very important to check phase. Throw a phase meter on the master output in your DAW, or flip between stereo and mono when you're monitoring, if there is a huge loss in depth, then there is phase cancellation going on. Even the slightest adjustment in mic placement can heal any phase problems. Or, make them worse.
Hmm, but yeah, good drums, good drummer, good room = good recordings, even with "bad" recording gear.