A friend of ours for example has a 710D
4x4 standard hoe with over 12,000 hours and 0 problems.
Ive heard of guys who had 310B's put over 8,000 hard hours of abuse and never even changed a hose.
Going on to the new Total Machine Control option on the J series. A friend just traded for a 310SJ w/TMC, the technology is impressive but it's a totally different world verses a standard control machine. I had a very hard time getting use to it. I spent very little time on it though. It was as if you were in front of your computer with 2 computer joysticks. No feel or feedback.
The machine has 3 work modes, low/medium/fast. Its hard to find the right "spot" to be. I have never seen a backhoe so fast. 1/4 throttle and it will move faster than any backhoe Ive ever seen on the back end.
On this machine you loose the ability to be able feel the valves open and be able to cushin your movements. Standard pilot controls don't have the same feel and response as mechanical controls but still give feedback. TMC to me has it's own brain, you just tell it what to do.
Besides the controls, the machine itself (although much smaller than a 710 or 450,) was a very impressive machine. Deere thought of everything. To sit in a Cat or Case verses a Deere, the Deere is highly advanced. Placement of switches, pedals, service check points, grease fittings. The design of quick couplers. The Deere will take Cat, JRB, and Deere attachments.
The job it was on was all sand, the machine would dig itself a hole. I was told the transmition is the same tranny used in a 444 loader. The loader end was fast also.
I spent less than 2 hours on the machine so I can't truly compare it but these were my first impressions and what I learned from the guy who owns it.
Just my 2 cents.I myself am young and this is the wave of the future. I still prefer mechanical controls any day of the week over pilot controls.
My vote is 100% for a 710 over a 450.