Any thoughts on the difference between these 2 machines? Specs-wise, the 1540 just has a slightly more powerful engine, but that's about it? When we sat on 'm at the dealer, the 1540 had a nicer 3PH leveling thingy, it had Medium in addition to the Low and High on the 1533 (but maybe we sat on the power shuttle version of the 1540 vs the regular synchro shuttle on the 1533?), and didn't really see any other differences. Lift capacity is the same, loader would be the same etc. So is it worth the $1500 more in price that the dealer quoted us? On the one hand, it's only $1500 over the life of a 72 month loan. On the other, it's only 5 more PTO HP. Is that significant or is it negligible? Does the extra HP make it possible to pull bigger implements, like a 6' mower vs 5' mower for example?