Those 2 models are good picks. Both run a Kubota diesel and seem extremely reliable. We have an ’04 S160. Bought with around 2,300hrs and now have around 2,800 with next to no issues. If you can find one in your price range, I’d go S160 because of the fact you get a turbo engine with about 10 more horse. If you plan to do any digging, you’ll be glad you did. Maintenance records would be a huge plus looking at a used skidsteer. Check for leaks at engine (unlikely), and all hose connections. Check for play in all of the boom and bucket pivot points (there will likely be some, but shouldn’t be excessive). And I’ve always been a little skeptical of machines that have been repainted. The drive system is another area to look at, but somebody else may have a better idea what to look for there. We haven’t had any issues with that.