Just a question of personal preference, if you could get a t300 1300 hrs for $35000 or a T650 500 hours for $37000 same options.
the 650 is probably still under warranty... :drinkup
T300 is a bigger machine. Give or take 500 lbs more lift and 10 or so more horse. I think once you sit in a new M series cab, you will know which one you want.
Warranty + new cab = T650 for $2k more IMO. That's a good price on the T650 with low hours, salesman quoted me $53K for a new T650 non-Tier 4.