K and T CHL and 2CH, compared to Cincinnati 2ML and 2MI

I have a Rambaudi UR60 and use the vertical 95% of the time but am always looking for a horizontal if it has the low lead, mainly because I like old rare iron and there are no parts for Rambaudis. Are there differences worth noting between the K and T and Cincinnati mills in the #2 and #2 light sizes? the 2ML seems closer to the 2CH in size while the 2CHL looks to be lighter and the 2 MI heavier than the K ant CH. I can find that the spindle and some internals are lighter on the CHL but Cincinnati brochures say the difference between the MI and ML is the motor size although the weight differential is greater than that would account for.

In addition, are there differences in the lead attachments that make one easier to source or find parts for ? It's not my first rodeo in the old machine buying game and I know condition beats brand but if anyone has wisdom on any of these machines, I'd like to learn. Dave