I bought a 3820i in 2006 and I couldn't be happier. Rugged tractor, Cummins diesel, good power, heavy tractor, easy to maintain, and a great value in todays market.
I have a 2011 4520 good power, has had warranty repair, overall good value, mowing, using the backhoe, loader, and snow removal, have not used my posthole digger yet