I'll stand with donnah on the AW IMRs. They are all I use now, the biggest issue I had with TF's and UF's was the protection circuit tripping on my LR cartos. I don't have that issue with the AW's and a single 14500 will last me most of a day.
Oh and Super T has the best prices on AW's stateside. Big thing to look at is the shipping as well, I think you end up paying about $1.50 shipping per battery until you hit the point where the flat $5 shipping would be cheaper. One thing to remember though, they don't send confirmation e-mails when they ship, just when you place the order.