The 48T STM plates will last longer. Sendo Ducati are seeing 3 or 4 meetings in BSB with them compared with 1 meeting on stock parts.
They are on "promo" at the moment. £250 for the plates and basket. Works out about £50 more than buying the stock parts. Looks better to as the basket is anodised red
drop me a mail if you'd like more info, or call Alan at AJ Racing.