What tactile feedback options do you offer for membrane switches?

Three options: (1) stainless metal domes — crisp click, 180–400 gf actuation force, 1M+ cycles; (2) polyester domes — softer feel, ~500k cycles, lower cost; (3) non-tactile flat — simplest and most sealed. Medical and industrial buyers usually choose metal domes. What force range feels right for your users, or should I include all three in the sample?