Just to clear things up... the 3.0 refers to the orbital radius, which is 3mm, or slightly less than 1/8". The orbital radius on my Festool FTS 400 is 2mm. Also, the pads are almost identical; 81x133mm for the Mirka and 80x133mm for the Festool. I'm not sure why Mirka chose to go with the 3 x 5 inch figure in their specs. Yea, it's close, but why go imperial for that?
With its low profile, the Mirka clearly looks superior in terms of ergonomics.
I guess I'm just a Festool guy at heart.
Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner