What tines are best for my horse?
Your choice, either OEM tines at $150 per set or aftermarket at $50. Here is a set of aftermarket.
A web search will pull up case hardened OEM tines.
My MIL bought a new troy bilt pony in the early 80’s. Its a pretty rugged machine. Basically the same as a horse, just a tad smaller. it had multiple speeds, electric start, and forward/reverse in all gears. it finally bit the dust around 2010, needed a new engine, but fixable, and she opted to buy a new pony instead of fix the old. The new one is kind of a POS. Much reduced quality IMO. The gearbox failed within ~10 hrs of use. They forgot a part or some such. The reverse function is janky. Its a button you have to depress constantly, which is difficult to do since you naturally want to habe both hands on the tiller. I was less than impressed. The old pony is still kicking around. I’ve thought about fixing it but Im not much of a tiller guy. I bought a vertical tine power harrow a couple of years ago though and love it. It works on a slightly different principle. Great for breaking fresh ground
The ebay tines lasted me probably 10 hrs of usage. Some got bent and the steel was soft probably from recycled scrap and i wasnt impressed by the wear at all…maybe because of the fitment…i think the ebay and cheapo ones have 3 holes and good ones have 2 holes.
I have these now and they are guaranteed for life against breakage and i dont see them needing replaced for a very long time. I got the hard hat ones…due to having to break ground in some areas that had alot of rock.
With that being said sometimes its cheaper to buy a good used tiller for cheap with excellent tines and swap them out.
If you have sand or sandy loam the cheapo ones should be ok for seasonal usage. YMMV.