Pricey but not as expensive as the Extremes or XRs. I can get them for about $50 a tire in Korea which, in the long run, is not a lot of money. If they last half as long as my XRs did then its a good investment.
Yes, I think a Dureme in 1.75 would be ideal but they dont make it in that size. A 2.0 is a little big but thats better than being a little small. I am worried about Cambodia once I get off the beaten track. Lots of sandy roads there. Even though the main roads are all paved there it would be nice to at least have the options of going somewhere more remote if I desired.