Well, what other food and drinks do you like?

If you like scotch, try lapsang souchoug - it's a smoked Chinese black tea.

If you like sushi, try Japanese sencha or gyokuro - the same umami flavors in nori and kombu come through in the tea.

Etc. Etc.

If you were me, I would suggest a "malty" Assam (or an Irish breakfast blend) for most mornings, lapsang souchong for cold winter weekends, bundled up with crossword puzzles or programming texts, cheap-but-decent Assam as a base for making masala chai (with fresh cardamom and vanilla sugar), and good Sencha for the office. Citrusy green teas are great for summer pitchers of iced tea.

A good tea shop will be able to find matches for what you like, though. (Also, somebody at Tea Gschwendner (in Chicago) taught me that, after smelling lots of interesting teas, the best way to reset your sense of smell is to smell your clothes. FWIW.)

Anything you like, it is best to approach tea by taste, not by health benefits... start with experimentation -- whites, greens, oolongs, yellows, blacks, pu-erhs all have extremely different tastes.

Personally, I'm a fan of Maté for its high caffeine content and wood-esque flavor.

I like maté too, but it isn't tea - it's a different plant (which also contains caffeine; apparently it's an easily synthesized pesticide).