I've always, and still do, say that the IBM Selectric II had the best keyboard ever. I like my Pok3r with MX Blues. They give me a tactile feel and a nice click, but it's not a Selectric II.
When I press a key on my SII there is almost a few centimeters where you don't need any force at all. Then you reach a wall. That's where the key registers. You press down on that and it bottoms out. You get much more than a click when the typeball hits the platen. You also had the feel of a 25lb. machine under the keys. Even the most durable keyboard can't beat that. The hum of the motor. The smell of the oil in a freshly serviced machine.
I don't think any switch can re-create typing on a SII.