john deere husqvarna timberjack caterpillar

I've been shopping around and noticed that the timber jack 460 John Deere 648 and cat 525 are all with in a few grand of each other. As far as fuel consumption per hitch what is the better of the 2. I know I listed 3 but the timberjack 460 and 648 Deere are pretty much the same. Also what...