Dual sports are fun to ride and can definitely be useful for MTB : )
Unfortunately the one below was stolen up in WA so I'm looking for a bike as well. No KTM though. Probably stick with Honda likely CRF250L or 300L, possibly KLX250/300 or WR250R depending on what deal comes along. Not a ton of used inventory out there right now.
It's worth doing your research before buying. There are lots of options all with trade-offs, and like MTB you could end up spending a lot of money on something that isn't necessarily best bike for what you'll actually be riding. So that said, I'd make an honest assessment of what you're likely to actually ride and go from there. Fire roads? OHV areas? Singletrack? Desert?
As much as I'd like to think I'll eventually ride singletrack on a moto, I've ridden enough moto trails on a MTB to know that a lot of them are just far too steep or gnarly for me, and I don't see myself ever getting enough saddle time to learn. Since I need something plated, reasonable seat height and want long service intervals, I end up with pretty much the list above.
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