Didnt ride BM, butt reliability and fuel tank size is more for what you need. And wibes... they are not so horrible, you will get used to it. It has some lack of power, but on the big trip you will ride more carefully, so you dont need it really more. (but would be cool to have it)
BM has factory fault on rear suspension, some bending issue, esspecially with two on bike and luggage on longer unpaved trip.
I would go for Tenere in this case.