I think I am having a confusing day...
OP, are you looking used, or insisting on new?
Price range?
I'm not sure why people tend to now want to say what they want to spend, cause that can really help us in making a sensible recommendation...
With V10 chassis, you are not going to see much difference other than wheelbase. The longer the wheelbase the better it will handle. The shorter ter rear overhang, they better it will handle.
V10's rev. 4500 rpm for thirty minutes up a big grade is not unusual, and won't hurt it. May hurt you tho.
