I've always gone with Bt010 front / rear, or occasionally a BT020 on the rear. I found that the rear tread pattern would really chunk up under heavy two-up riding (lots of engine breaking for bends, plenty of power on the way out).
2 years ago I had an 020 on the rear of my vfr800 down to the wear markers within 1500 miles, and no tread at all across most of it by 1800
This last trip I tried a Pirelli Dragon GTS on the advice of my local bike shop.
IMO it is just as grippy as the 020 but has stood up well to some serious riding over the last week. The other bikes shod with 020's all had quite heavy tyre wear, but mine looks pretty good still.
According to the Pirelli web site its extended life is something to do with the tread pattern.
I personally don't like the michelins as they tend to move around too much for my liking.