I am testing my old (well last type on it about 6 ago) membrane keyboard today, as I am probably will return to that kind of keyboard. I feel that if I buy a new keyboard I could type on it better, and it would be more silent.
I know that I am going against the tide, since mechanical keyboards are all the rage, but since I can't really find good ones in my country (not even to trying it out) and the ones I use are expensive, I may go join the membrane party for a while. :)