Holy thread resurrection BATMAN, I have been running an 825,830,and 835 for about 2 years now since I first posted this thread. I love the 825 cause its very fast and agile, but the viability out the bottom to middle of the front windshield sucks with the steering controls in the way. The 830 we have has a deutz motor, it likes to go threw 2 water separator filters before service is due on the machine, and the Idler rollers are very hard to clean out if you run this machine in the dirt. Our 835 however is a great machine I have had no problems with it at all, in the first 1000 hrs i have put on it. Sennebogens are a true material handler, not an excavator modified to be a material handler, in my opinion.We are a dealer for Sennebogen. They take getting used to when traveling but as far as the operation they are great. They are easy to diagnose as well when problems arise. In our territory we have 6+ 850s, 5 or so 840s, and a few 830s and 835s as well a couple of the 305 telehandlers.
The biggest problem we have with them are the "C" models they have the CAT engines. We have had liner failures, turbo issues, excessive blow-by, and all before the 1500hr mark.
The new "D" models have the cummins in them and have a much better track record so far.
And truck drivers hate them...