How big do you want? is the first question to answer.
How off-road worthy do you want is the next.
I've ridden:
KTM 1090r, 690r, 990 Adventure, 950 Super Enduro, 1290 Super Adventure. 790 and 890 adventure R's
Ducati Scrambler and currently a Desert Sled.
Honda 650xr, XR650L, vfr1200x, and briefly an Africa twin, nc750.
BMW GS1200 adventure, and 750gs
Triumph Tiger 800 XE
Suzuki Vstrom 650
KLX650
For big touring the really big bikes are nice. I wouldn't say they're very off-road worthy in the way I use bikes. A 750 is much easier to pickup when you drop it than a 1200 for example.
Wind protection makes long rides less tiring that's real.
If all you're going to do off-road is dirt two track, then a Vstrom makes a lot of sense. It does it all with a price tag that isn't too bad. It doesn't do anything exceptionally well but it does everything.
The Africa Twin also makes sense for you as well -I'd put that on your list too.
I'd probably consider a Tenere 700 for my next bike, as I'm very off-road oriented.
Figure out you wants as precisely as possible and we can steer you.