I prefer hall-effect switches as linears, and will eventually modify my microswitch KB for gaming. It has NKRO, it's linear, and it (in theory) should have excellent debounce times.
For all the linear switches I've used, I like the hall effect ones best. Unfortuantely, in the late 1970's, microswitch (honeywell) changed the stems from round to the newer square shape, and the square ones respond much better to off-axis hits. This can be remedied on the earlier iterations with some lubricant, much like some peolpe like to lube their cherry MX switches.
Also, I would expect the RAFI switches to be good as well, provided one puts a linear spring in there (some RAFI switches have a buckling rubber sleeve supporting the switch)
All that said, I only game on ergo-clears and reds. My ergo clears actuate and reset right at the bottom of the tactile point, and since the reset force is so high, it's easy to "bounce" them at the activation point. This isn't necessary for most of the gaming I do, but it does come in handy once in a while. I find it much easier to do this on ergoclears than (say) reds.