Just HAD to resurface for this one (otherwise, moving house, renovations, work, new schools for kids - life is too crazy lately to do anything else besides the most basic things) ...
Only black tea, only loose leaf. I prefer Assam, though English breakfast is good too. Darjeeling is usually too delicate - I like my tea strong-flavored. I make my tea in a french press, like many people make coffee. I take my tea with a little bit of milk (lactose-free, because I am lactose-intolerant), and a dash of sugar or Splenda.
I really don't like tea bags and use them only at work, where I cannot prepare myself a good fresh loose leaf tea.
I also don't drink herbal teas at all, except for green tea, which I drink with Asian food.
Yo wouldn't believe how complicated it is to get good quality strong black loose leaf tea in Israel I brought a huge stash from London, but it is long gone ... I order mine on the Internet, from one of the fancy internet coffee shops we have here. Last time I ordered, they also had an interesting tea called "Christmas tea", which had spices added to a strong black tea. Very nice.