If you're using 75's/DA cranks etc, use a 111mm Campagnolo Centaur bb. ISO, 111mm and ITA/BSA thread. People use this with 75's/DA/... cranks, me previously included and it's fine, also sealed which is a bonus. Sugino have recommended it when asked.
Alternatively, and for more £, Phil Wood sells 110.5mm ISO BB's with a range of mounting cups for various threads, Italian included.
If you're using 75's/DA cranks etc, use a 111mm Campagnolo Centaur bb. ISO, 111mm and ITA/BSA thread. People use this with 75's/DA/... cranks, me previously included and it's fine, also sealed which is a bonus. Sugino have recommended it when asked.
Alternatively, and for more £, Phil Wood sells 110.5mm ISO BB's with a range of mounting cups for various threads, Italian included.
http://hubjub.co.uk/index.php/store/bearings/phil-wood-inox-bb-detail
Am sure there are other options but these are probably your best bet.