The Miche is fine, you should just put some blue loctite on the thread cups since A) the drive side does not have a lip so you can't synch in down B) the non-drive side has no lockring to prevent it from backing out.

That said, I have had good luck with Token BB's (avaliable in JIS/ISO tapers). They are basically just like Shimano ones, but come in a 102mm length for ISO. Campy square tapers are the best, but expensive and hard to get nowdays.