Looking to purchase a pair of Eddys for myself. I dive in warm waters 95% of the time but want to buy a pair of fins that I can use for both cold and warm water diving. I'm a US 10.5 shoe size but I wear a pair of US size 11 Aqua Lung 5mm SuperZip Boot under water. What size should I get? I was told to get XL as the spring strap is adjustable but looking at people's comments here it feels like L would fit better?