I second that. I had (and still have what’s left of) PCR300, keyless exactly with the same problem as Mark said. It was a 200€ controller with really poor quality pots and sliders. It lasted ~8 years. The editor was good though.
However, I found a great controller made by Samson, Graphite 49.
Solid sliders, pots and with pretty intelligent features for a 115€ controller. Really pleased with it, USB and MIDI can be used at the same time, instant midi channel change for keyboard and controls…and it’s class compliant, no drivers