It's tough to get good data from anecdotes. Anecdotally, my first-gen butterfly MB keyboard has been flawless, while I've had half the function keys fail on my

It's tough to get good data from anecdotes. Anecdotally, my first-gen butterfly MB keyboard has been flawless, while I've had half the function keys fail on my fancy mechanical keyboard. (Though they failed due to a issue with the underlying mylar strip, and Kinesis was happy to sell me an out-of-warranty replacement part.)