TYM makes some good machines and have made them for other tractor companies as well. Mahindra and Montana come to mind. I am not sure about the models that you are looking at but my guess is that the models that are on sale will soon be discontinued. When I was at the Tulare AG show in Feb, the TYM guy pointed out a few of the models that they had on display were no longer in production and were due to be replaced with all new designs. Just because a model has been discontinued is not a good enough reason to not get it if it meets your needs. If the price is right and the tractor meets your wants and needs, get one. If you are concerned about re-sale, then you might want to re-consider and go and spend more $$$$. Myself, I don't go along with the resale stuff, if you spend less money, of course you will get less back when you go to sell it.
Just my opinions, others will vary.