my akba 600 is a sweetie! 1100 aircooled, 1150 when peltier-cooled.
one thought though, i haven't seen any overclocking reviews of the 900, so i'm not sure how it does overclock. if the duron line of procs is going to be going to 1.2ghz for instance, then the new 900 might be to durons what the 1ghz axias are to tbirds.. just a thought...