Pre-emissions machine, or new? Brands to consider?

Hey guys (and maybe some gals on here), I'm in the market for a skid steer. I'm tired of renting, and have a bit of work to do around the house. 5 acres in the woods, so some dirt work, rocks, tree work, stumps, landscaping, gravel driveway, and a hobby of working on trucks, so moving junkers around and their heavy parts (axles, engines, beds, etc...).
There's a possibility of a few side-jobs through my mother's landscaping business, but I'm not factoring that into anything.

I've...

Pre-emissions machine, or new? Brands to consider?