Glenn, they seem to be comparable. Both are joice sticks and are very easy to use ..I think anyway.65' vrs 75' ? probably not a whole lot when your looking at straight height. However, if you take that extra ten feet and stretch over a 360' radius it adds up. When your doing alot of tip work, reaching to the back sides of trees. height, wich increases your knuckle height to bend over certain latterals, setting rigging lines in the right places ect... There are a mutitude of reasons for the extra height Glenn, but for 14 extra k..it might not. I run a 75' techo ( pretty much the same as a high Ranger) and also a 55' Altech over center.The Techo doesnt have over center capability like the Altec,only ten 10%, but I can do just as much with it because of its knuckle height.So, with the over center ability of a Altech or High Ranger and the elevator, it really increases your manuverability.. I think what you need to do is just demo them and try them out in a tree. The sales reps should be able to let you do that. See what one you prefer and go from there.
Greg