I recently mated my Miche Primato crankset with a Campagnolo Chorus (ISO) 102 mm BB. This puts the chainline at 41 mm, so I spaced the hub over 1mm to make the chainline perfect. You could also try putting a 1mm spacer inbetween the BB shell and the fixed cup, or just live with a chainline that's almost perfect. The Chorus is super smooth, and the cranks snug up real close for a nice low Q-factor. If you're running a road conversion or a Steamroller, this may not work for you, 'cause it puts the ends of the cranks just 2mm away from the chainstays on my track frame. When i looked at the BB before installing it, it seemed that the sealed bearings could be replaced when they wear out, so you wouldn't have to toss the whole BB.