I can turn a wrench alright. My problem is I have too many things to turn wrenches on, and with two small kids and a busy job, it's not always how I want to spend my time. I actually *like* turning wrenches. So, as with every other major purchasing decision, there are a bunch of trade-offs to consider - depreciation, interest, time spent on repairs, money spent on repairs, suitability of the equipment for my usage, etc.
At the end of the day, I can always sell trade it in on a new one if I decide I need to do so.
Maybe a better question is - what's the worst case on one of these? Say the engine blows up or the HST is done for. What are the repair costs like? If it's 2k to replace an engine or trans at the dealer, used makes sense to me. If it's 7k to replace an engine or trans, I'm buying a new tractor.
My luck, it's probably 4k, right in the middle, leaving me with a very tough decision ...