"Corelle is great stuff...but when it breaks, it really sucks..."
Don't you wish. Corelle never "breaks" but if you manage to drop it so a stress line hits something hard, the damned stuff explodes like a grenade. I've only done that once in all the years (30 odd?) I'd eaten off it and that was one bowl dropped on a vinyl-over-wood fairly gentle floor.
But it went off like a bomb.
I don't use the Corelle mugs, they were never "muggy" enough for me, so over the years I've lost a few mainly novelty mugs of different kinds, heavy porcelain or whitewear. But I've also got a couple of double-walled stainless steel mugs, and I love the way they leave no sweat rings and keep a cold drink COLD.
"Dear Santa: Titanium double-wall mugs would make the boat faster and lighter, and that's always a good thing."