I may actually start by disputing the Model M being a good analogue for a Cadillac. Cadillac, to me, means luxury and refinement. You would think that would go to something more like an SKCM blue alps boards of some sort. I don't particularly like the tactile event of membrane buckling spring myself, so I would put it closer to a Jeep Wrangler. They look like they're lots of fun to drive, if even just for the way they look and sound, they're rugged (with some rough edges). They're quirky, interesting, abundant, and desirable, in spite of their flaws.
I'm using a Matias Mini Tactile Pro at the moment, so what could that be? It is small, sleek, and noisy, yet utilitarian/practical. It is making me think of my Chevy Sonic sedan, as unexciting/unappealing as that is. It gets great gas mileage, it has a good balance between cost, size, build quality (in terms of materials), passenger capacity, storage space, and yet even with an unimpressive 4 cylinder engine has a throaty/rumbly American sound to its engine when accelerating. It is relatively fun to drive, although that is somewhat handicapped by modern cheapening/"innovation", with an electronic clutch, power steering, gas pedal, etc ... like Matias switches eventual adaptation from the mighty Alps. Seeing as the overall reliability, being a GM vehicle, is basically a mystery box, I imagine that fits pretty well with Matias' current reputation as well (I'll see for myself in time).