I just recently flew a Leo 23GT "spider lift". Gotta say, it was versatile as all hell! 75ft reach, telescoping boom, made accessing the tree at max and min boom extension really easy and efficient. Also, it being a tracked boom, separate from a truck, you can just walk it into backyards, side yards etc. We squeezed that thing through a tiny walkway, and blew apart a dead elm in no time. I would say, if you are looking for a stand alone bucket, without a chip box on a truck, the 23GT is an option worth looking into. 2-man bucket to boot! You're fuel charges will be lower, you'll need a chip/wood truck there anyways, and you can haul the 23GT out with a pick-up, and the spider lift runs on a small pony motor.
I am not sure of the details of the spider-lift, the fella that owned it had to get it certified in Canada, he purchased it in the States. I enjoyed working with it, and it's something I would recommend IMHO.