Thanks for the replies. Matt, what was your frustration with the 6" Vermeer? I found one that looked in good condition, but the hour meter (almost 7000 !) scared me based on what the owner was looking to get. It's easy enough to rent one around here, so I'll probably try one in the spring. From watching videos on Youtube, I would be annoyed with the 6" if i was chipping stuff near its capacity, but I only want a stand-alone unit that has hydraulic feed to chip stuff under 3", because i've got a pretty good system for rapidly turning 3" and up into small food for the wood stove.