75s just got a bit cheaper...
Doesn't campy already make a 109mm ISO BB? That = generic unknown quality?
Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.
White Industries BB
Campagnolo Centaur BB
Shimano UN-54 BB (unsealed, but SUPER CHEAP so you can replace it if you want)
you really have quite a few options
With the Miche bb you've pretty much gotta loctite the cups in, at least I did. The so called adjustablity is more a design flaw.
centaur bb is the way to go.