I too like the 2.1 switch, it's a lot nicer imho... i put the spring i had from the old switch to increase the pressure needed to push the button but that's personal preference (i stretched that one...)
but it does feel a lot tighter on the tolerances, which makes me a happier camper. only time will tell if this ring & contacts will out do the other on w/e is killing my button every few days. i still have to get some noalox to try...