It looks like they have done as much as possible to match the MT55 without redesigning from the ground up. One thing that irritates me about the TS55 design is the power lead exits straight into the groove on the track and often gets caught, and on the recent model I've used the hoover connection is too loose and rotates of it's own accord. These are two issues the MT55 gets right and that's why I'm happy to be using one whilst my TS55 lives in the CMS module. I wouldn't buy the TS55R when the MT55 still has more than a few advantages, even though I have nearly the whole festool system.