When I went shopping for a tractor, the best advice I got was buy the tractor new, get the implements used. The second best advice was to get a Mahindra tractor. I grew up running the old IH tractors in the 60s and 70s, and since the Mahindra Corp bought the old IH plant in India, they are pretty much the same tractor.
My 4530 is the toughest tractor I have ever used. I use it for bushhogging, FEL work, etc. I just had it serviced at the 50 hour mark, and so far no problems whatsoever. It pulls unbelievably for it's size and it's weight helps in that regard.
I have hilly terrain on my farm and I have been able to bushhog parts of it that I didn't think a tractor could get to without flipping thanks to this tractors wide stance and weight. I thought I would need the 4WD for this work but so far, not a problem in 2WD although the ag front tires do help a lot.
This is the best tractor around for the price, and it will flat out outperform any of the big three tractor manufacturers HP for HP and beats them completely dollar for dollar.