Bob Gerritsen's response is spot on. Festool is a great company but Mafell takes there fit and finnish a bit farther. I agree its hard to explain but you will understand after using a Mafell product......its well thought out and the details are perfect in function, feel, and looks.
In the USA Mafell is not close in price and has one Dealer:
www.Timberwolftools.com
For the USA that means dealer support is not near as localized but that doesnt stop me from buying Mafell. Its like the first time you use a Track Saw or a Miter Saw.....you work differently because the options to solutions change. This is true with many Mafell products such as the KSS300, Duo-Dowel System, MT55 and the Erika pull-push saw(Festool has a version but only Mafell's is available in the USA).
Personally only one function can be enough to select one tool over the other. For example the Mafell MT55 has the best blade change function...you simply set the saw down, Press a button, pull a lever, and the entire side swings open while locking the blade. This was a feature that didnt mean anything to me when I bought the MT55 but after use its one of my favorite characteristics and is enough if a re-purchase ever occurred. Simple things like
the F-style rails have a second slot closer to the cutting edge for narrow stock and the joining rail function being fast and dummy proof.
Its important you dont miss understand where I'm coming from......brand loyalty means nothing to me. I'm not painting my shop Red or Green! Its about what tool makes your job easier and faster(time=money). My tools make me Money and have to Perform. Price is only one part of the equation and since I have a long career ahead its easier to gain over the long run.