I'd say its the R2 5 mode, a CPF member measured current draw about 1.2A and said it was visibly brighter than a dereelight... I'm trying to find that thread, will post it when I find it.
I only got the R2 single mode and compared to my Cree P4, its at least twice as bright and throws about 50% further!
I'm very happy with my DX R2 drop-in, the tint is towards the cooler end of the spectrum on mine.