There is a possibility you could find a 3032E JD tractor that is a carryover that is pre emmissions. The 3032E and 3038E tractors are identical except for the engines. The 3032 is slightly larger displacement but non turbo. Only 6 hp less but rest of tractor identical so same weight and will do same work except for maybe mowing heavy grass or some pto work. I don't think you would see any difference in loader work cause you are almost never engine power limited. The 3032 was not as popular tractor because the cost was not that much less than the 3038 so most people opted for the slight more additional cost getting the extra power. The turbo tractor is a little more peppy but from a longivity and repair standpoint the 3032 would probably be the ever so slightly better choice.
I'm talking JD because that is what I am familiar with. There are lots of the other brands that look equally as good (the Korean origin tractors look to be well made). I just am speaking of what I have had experience with. You might be surprised at the pricing. Check with several JD dealers. Call the Pittsburg dealer. Ask for Craig and tell him I sent you. 316-231-0950