Just got home today from a 1750 kms 4 dayer with some information to help in your decision making.
I got 17,000 kms (10,600 miles) out of my original Bridgestones but tried Conti TKC70s for a little more aggressive tread this time. Both tyres had similar conditions, uses and even trips - a 7,000 km Australian outback tour which included nearly 10% gravel.
These TKC70s have disappointed me a little. They'll nearly toasted at 10,300 kms ridden the same way and doing nothing really any better than the originals.
I'm going back to Bridgestones next month.
I would have tried Heidenaus but, having them on my DR650, I don't think they'll do any better than my Dunlop 606s and for double the cost.
Just my opinion but hope it helps.