The best depth neck is the one that fits your hands.
I've been down the narrow and slim route and it used to give me hand cramps (big hands, long fingers)
I'm happiest playing a full fat P neck - the chunkier the better too!
Another alternative take on a theme. Not sure if Paul Ryder copied AJ's OJ bassline or if it's a sample. The 303 would be cool over the Monday's nod to it anyway...