You'd really have to work at it to lose a recording with the PCM-M10 remote. I know people are worried that it overrides the hold button. But in my so-called real life this just does not happen. It's designed so that you stash the recorder somewhere on hold--even in a pocket--and just deal with the remote, which tells you immediately if you are paused, stopped or recording because it has the red LED on it.
The stop button isn't particularly sensitive--none of them are. The remote is small and could also be taped to the mic or whatever. And really, this is a voice recording. You don't need the Marantz at twice the price.
Yes, I remember cassette recorders where you pushed down the mechanical switch and it stayed down. But I doubt anyone is going to build that feature into a digital recorder.