Sonoma,
I owned a D/A 1920 for a few years, before I got my 445. It had a 60" deck, that ran on the ground on it's rollers, unlike the Deere decks. It seemed like a decent tractor, but the biggest difference I noticed was it had a lot of vibration. After mowing for an hour or so my feet were numb almost. Most of the vibration came from the motor, at one point a screw that holds the aircleaner on was sucked into the carb, but it didn't make it thru to the valves, thank god. Overall, the DA was a good machine, but in my opinion, they aren't quite the quality of the Deeres. The 318 was an awesome tractor, and I would bet the one you are looking at is older than the D/A, showing they hold their value better. But, the diesel would be nice to have. I am not familiar with the engine in the D/A, mine was Kohler I believe. At one point, I thought by looking at the transaxles, that they were very similar to the Deere 318 ,but now I don't think that's true, since the D/A offers a Hi/Low range in theirs. (right?)
I would guess the D/A could be heavier, It seems more in line with the Deere 420 series sizewise. They both have power steering, which with a loader is almost a must.
I guess I think for the money the 318 is better, if the D/A was 1500 or so , that might become more attractive.
Does the D/A have the 60" deck? The 318 came with a 46" or 50", so if you are mowing a few acres, that might be an issue also.
good luck
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