From the looks of it.... the physical sizes are the same (from what I can see and measure). I like the look and feel of the das key caps. But I want to keep my Filco as my main keyboard (I use the das at work).
So are these exchangeable....? Ive looked at this thread... but it compares the pad printing vs laser with some tests that I will never subject my keyboards to.
Also.... maybe its me, but it seems the DAS keys are of better quality (possibly slightly more dense).