eatSleepWoof
Do it for the 'gram
I went with a diesel heater purely because of the cost (~$250 vs $2000 CAD for propex).
That said, if money was not a factor, I'd opt for the Propex 100% of the time. Single fuel source is a big plus, but beyond that, all diesel heaters have a distinct ticking sound coming from their pumps. I'm a very, very sensitive sleeper, and that sound can occasionally bug me. Even with significant noise insulation around the pump, the ticking is still audible inside my trailer. You shouldn't have any noise with the Propex.
I've used propane stoves in -24C without any issues. And have also used them at the altitudes you mentioned, also without any issues. Although I haven't combined the temperature and altitude in one trip.
That said, if money was not a factor, I'd opt for the Propex 100% of the time. Single fuel source is a big plus, but beyond that, all diesel heaters have a distinct ticking sound coming from their pumps. I'm a very, very sensitive sleeper, and that sound can occasionally bug me. Even with significant noise insulation around the pump, the ticking is still audible inside my trailer. You shouldn't have any noise with the Propex.
I've used propane stoves in -24C without any issues. And have also used them at the altitudes you mentioned, also without any issues. Although I haven't combined the temperature and altitude in one trip.