Well, I have a Compaq KU-9963 which is a membrane board, non-clicky of course, but with a 55g peak force bump fairly high in the travel. I have to say that I do like the action on this board, especially because of the bump.
Membrane is just the mechanism that registers the keystroke, it determines nothing about the feel, do you mean Rubber Dome?
If you do then I agree, I've got a rubber-dome gateway non-anykey that's very nice to type on. I wondered if yours was the same keyboard, but looking at a picture it appears to be a lot newer
I tried out the Filco with Cherry browns and it is nowhere near as tactile. As far as mechanical non-clicky switches, it sounds like the Alps blacks are the only other game in town. Are they significantly more tactile?
If by 'tactile' you mean a sudden change in the feel as the switch goes down (i.e. a silent click) then no, or at least not for the real alps. (They're very nice though). I don't think any of the mechanical switches give the collapsing behavior of rubber domes, they're all fairly consistant all the way down, with some having a click in the middle.
The Cherry Cymotion Expert seems to be fairly popular around here (it's a rubber dome keyboard), but with a quick search I couldn't find any posts describing it's feel.