I wear earplugs every night too. My Dh doesn't snore, I'm just such a light sleeper that general neighbourhood noise wakes me! I love the soft pink gel-type ones from the pharmacy, hate the foam ones.
Anyhoo, point is that I turn the monitor up quite loud and it's easy to hear through the earplugs.
My DH snored about 5 years ago when he was carrying an extra 10 kilos. I also snored in late pregnancy last time (so embarrassing!). Both of us stopped as soon as the weight came off again.