have had new miche hubs on my bike for about three-four weeks now, and no complaints about them. they replaced generic bianchi hubs, so they should feel better, and they do. very fast, very smooth.
with the bike off the ground they don't spin "forever," but the decrease in rotational speed is gradual and consistent. i can't compare to superbe, dura, record or phil, never having ridden them, but these hubs feel terrific for what i payed for them.
be interested to read anyone's review of miches compared with the higher end hubs mentioned above.