The specific project I'm using it for is an existing circuit that has 8 momentary switches in it already, so this would be replacing those with something more ergonomic.
Hmm, it would suck if it's a polyester thing that can't be soldered to. I did buy some conductive glue recently but I don't know how much I would trust it (not used it yet).
I'm basically building an updated/upgraded version of this:http://rodrigoconstanzo.com/The_Party_Bus.html
So the apple keyboard would be those buttons along the front of it (though 8 now instead of 6), so something compact and "fast" feeling would be ideal.
The ones I used before (in that picture/build) are nice since they are illuminated but they aren't terribly sensitive. I don't press the button down all the way, sometimes it wouldn't register.