As a chemist, balances like this are what a multimeter is to an EE. Both Sartorius and Mettler-Toledo make good balances. That being said, pretty much every lab I have worked in, the larger "general-use" balances are either Sartorius or MT while the low mass balance are pretty much always MT. I don't know WHY this is but I've yet to use a Sartorius mg balance. In general, I'd say MT supplies about 80% of the balances in chemistry labs.
Honestly, the Mettler Toledo AX205 is one of my favorite balances ever.. It has good stability, even on benches with a bit of vibration, completely touchless operation, the display rotates out of the way for easy cleanup, etc. My favorite feature is something at first I felt was a bit gimmicky; it has two proximity sensors which you can map to various functions. I have one sensor mapped to open the motoriozed side doors and the other mapped to tare. This is important when you are measuring toxic materials (such as Cadmium precursors). I no longer have to clean the external surfaces of the scale after I measure CdO. I just come up to the scale, wave my hand over the right one, the doors open. Place my empty weigh container on the pan, wave my hand over the left one, it tares. I am now ready to measure.