Torrefaction

Ok, so yesterday's doctor verdict means that I can't drink Diet Coke any more, and I can't drink Earl Grey tea either because of the bergamot oil.  I'm never going to be a real milk drinker, even if my tolerance improves with better asthma control, so I typically don't drink breakfast teas.  Right now I'm going with Darjeeling for my caffeine fix, but I'm interested in something a little more flavorful (but no citrus or cinnamon, b/c of allergy).  For herb tea, I generally don't like herb teas--maybe they're bitter? --but I am fond of Rooibos tea.  I also haven't managed to find an iced tea that I like, but maybe Rooibos will be good cold.

So tell me, O internets, what are some good teas?  Varieties, brands, etc?  Feel free to include teas that don't fit my allergy profile, since other tea drinkers will be interested in recs too.  Also tips for brewing, although I'm pretty well hooked on my Senseo coffee hot water maker.