I was asked what the differences are between the LT125 and LT200 lines, I was asking the same thing over the previous weeks. To help others with similar questions here's a list to the best of my knowledge, please feel free to add/edit:Tough Torq K46 transmission on the LT200 (Hydro Gear T2HP on the LT125).
Faster mowing deck removal and re-attachment (has two pins in the back and then slides off bar/hooks in the front).
Separate choke control (LT125 has it on the throttle).
Elapsed time clock (to help plan servicing).
12v plug (e.g. cigarette lighter jack).
Cruise control (I forgot if the LT125 has this, but I think it's just a latch to hold the hydro setting).
Hear a blurb about one having a welded frame while the other is bolted, but not sure about this yet...