In reply to tjekel:
> I suggest you check if you really need a 4x4. When we were in Oman some 13 years back, you could reach close to all climbing easily with what they call a saloon car - and we travelled the country up and down. Roads surely improved from then.
I was last in Oman five years ago. We had a beefy 4x4. I suppose we could have done without it, but it certainly opened up a lot more options and allowed finding nice places to camp that might have otherwise been inaccessible. If I were going again I would certainly like one. With four people you can get all your kit, water and food for some time in a Hilux or equivalent and the shared cost is reasonable.