Big and beautiful.
And even though I don't find them uncomfortable (I wear them when I photograph on long trips) I find myself preferring 40mm watches (why I'm probably more leaning towards Rolex these days) and on a bracelet vs strap.
But I love em. A couple are still on my list. I'll probably get to them once I've gotten a couple more Rolex pieces. My tastes have narrowed down to a few brands.. Rolex, Omega, JLC and Panerai. And just a few pieces from each at that.. not even minding if I don't get some them.
But yes, while I find 47s and 44s comfortable, the 40mms are just more comfortable 
Best, Echi