If it's black, I'm usually a fan. My Favs:
Early Grey (no lemon, just Equal; if it steeps to long and starts getting a little bitter, I'll throw in a splash of half&half)
Darjeeling (lemon & Equal)
English Breakfast & Early Grey combined (discovered by accident and it was tasty - have to be sure not to steep too long or it gets nasty, about 2.5 mins max!)
I've never tried puerh, you'll have to let us know how it turns out.
Shameless plug - I get my teas form Golden Moon Tea since back home, there's really not a good "tea" shop.