Had the pleasure of running both of these hoes for a couple weeks a piece about six months ago. Thought I'd post some videos and photos of both for comparison. I know most of you guys are sub the 6T if not 4T catergory, but I thought it might interest a few of you anyways.
First a Comparison Photo of the two contenders.
Now the test was conducted in the following way:
The Job. 4 kms (2.5miles) of live water main replacement (lots of blue brute) through a 30+ year old subdivision, two schools and 1 park. Replacement of the main as well as the water line right to the city shut off for each house on the property line. Asphalt was cut, then removed and trenching was done through this mine field. Tasks for the excavators included but were not limited too, removal of asphalt, excavation, loading of dump trucks, lifting valve chambers, steel road plates, pipe, fittings, hydrants, etc. Which Brings us to excavator number 1.
The John Deere 85D
The Caterpillar 308E
I've run out of time to do a write up, I'll finish this later with my thoughts on both machines and some real world data. Here's some Cat Video for the mean time.
First a Comparison Photo of the two contenders.

Now the test was conducted in the following way:
The Job. 4 kms (2.5miles) of live water main replacement (lots of blue brute) through a 30+ year old subdivision, two schools and 1 park. Replacement of the main as well as the water line right to the city shut off for each house on the property line. Asphalt was cut, then removed and trenching was done through this mine field. Tasks for the excavators included but were not limited too, removal of asphalt, excavation, loading of dump trucks, lifting valve chambers, steel road plates, pipe, fittings, hydrants, etc. Which Brings us to excavator number 1.
The John Deere 85D

The Caterpillar 308E

I've run out of time to do a write up, I'll finish this later with my thoughts on both machines and some real world data. Here's some Cat Video for the mean time.