I've read all there is to read, tested bikes but still can't decide what to buy for our (my wife and I) multi-year RTW trip.

Main requirements are able to carry 2 people, their stuff and camping kit. Anticipated roads are mostly tarmac. However, we also want to get off the beaten track a bit (fire roads, dirt roads etc. no hard core off road).

I've boiled it down to 3 possibilities

Suzuki DL650
BMW R1150 GSA
Honda Africa Twin

On the face of it the Suzuki is ideal. It does, however, have one major drawback. The alternator output is rather low and will struggle to run heated clothing for when it gets really cold. I'm acutely aware that if my wife is not enjoying the trip because she's too cold then it's not going to work. We have tried the Suzuki on a short test ride and I think it would otherwise be suitable with a few modifications (e.g. suspension).

The BMW has the alternator output but I'm not fully convinced by its long term reliability. It's comfortable and would easily haul us and our kit. It is about 25% heavier than the Suzuki, not great. I have looked at the later 1200's but they strike me as too complex, particularly the electronics.

The Africa Twin has a great reputation for reliability but they are getting a bit old now and parts may be hard to source? Alternator output is also an issue. They are slightly more cramped for 2 than either the Suzuki or BMW.

What I want is a DL650 with 700W alternator

I know whatever we take will be a compromise to some extent. I guess what I'm after is some input to my thinking. Have I missed any other obvious choices?

Thanks for your thoughts
Steve