Haven't negotiated with either. More of a apples:apples asking price question. I did get the price on the same new model with the midmount mower, and we're talking a total of $3,500 difference after tax or 20% difference.
What do you mean by the "I would also highly think about a MMM on a tractor like that?". Are you suggesting the MMM isn't a good idea? I was steered by the forum towards a MMM on a tractor this size for my needs of establishing a lawn around the house and grass seeding further out on 3.5 acres of old farm land. Suggestion was this size tractor would be the right fit, and a MMM would be preferable to a RFM given the mowing around the house.
Guess it depends on what your mowing, I didnt see other forums. I have a Kubota 2650 similar size maybe a little big bigger. I just mowed about 3 acres with a pull behind took me 3-4 hours, would have taken half that with a zero turn. I dont want to be a homer but a ZTR is the way to go, unless your talking untamed grass land etc, then maybe a MMM, but if its rough tough tall stuff maybe a pull behind cutter instead I dont know.
Also look for used implements as well.