I don't even carry "everything" with me and I'm kind of finding the m/l flap to be too small! My wallet is quite big (short, but thick), though. I only carry my wallet, keys, and phone with me in the flap, and I'm finding that it's a little hard to get in/out of. Let's just say they're a tight fit.
As for the Jumbo, I LOVE IT! It's so easy and it's roomy. It definitely makes a statement. My white Jumbo with gold hardware is on its way. I recommend it!