I hadn't known about Richard McVeigh's recommendation, but it's here:
https://www.youtube.com/watch?v=puChILBjH-k&t=166sI ordered the thing mostly based on the website, but I checked whatever recommendations I could online, including on this forum:
http://forum.hauptwerk.com/viewtopic.php?f=1&t=18364&p=138769&hilit=+Schwindler#p138769 and
http://forum.hauptwerk.com/viewtopic.php?f=15&t=12343&p=91615&hilit=Schwindler#p91615The keyboards were chosen by a conservatory in Poland but it's on their Facebook page and I'm not on Facebook. I don't remember how I accessed it before, but it was helpful.
My primary instrument in college was the harpsichord, and my usual home instrument is a clavichord, so I don't like the feel of plastic keys. Fatar didn't have wooden key tops when I bought my Classic stack. They do now, of course, but I couldn't justify the expense on just that basis. I had to come up with more excuses, and Schwindler fit the bill.
One thing was the promise of longevity. Fatar keyboards have a lot of plastic and rubber parts, and repair people report that they wear out and are tricky to repair. I already have problems with one key which has to be pressed very hard in order to make contact. Maybe this simulates the action on a slightly out-of-adjustment tracker organ, but it's not really a desirable feature.
What really made up my mind was the range. From the (18th-century) harpsichord point of view, organ keyboards are missing half an octave in the bass. The keyboards should really go down to GG at least (for Bach); FF would be better. Schwindler keyboards are available with a range of five octaves from FF to f3. Yes! I can play the Goldbergs on that! (Sonus Paradisi has some nice, nice harpsichords.) This is important enough that I can justify the expense to myself.
As a bonus, the keyboards can be customized with some old-style geometry such as the shape of the sharp keys. This makes it look very comfortable for me (and matches my clavichord better than a modern-style keyboard would).