With their earthy tea and lemony character, they were fantastic in an English ipa I made last year. They blend well with English crystal malts and 007. If you can't get the English crystal malts, don't use American. Go instead for aromatic or biscuit.
They also made a tasty lager. But like the guy said above, go ahead and showcase them in an ipa to get a real feel for them, and then go from there.