In my opinion there are few other guitar picks that can match these. I have not tried them all, but over the past 30 years I have had the opportunity to test a whole lot of different ones. Big, small, thick, thin, plasticky, metallic etc etc.
For me as an electric guitar player (mainly) these have just the right combination of size, weight, grip, durability and thickness. They play great, feel great, and last for ages.
My personal favourites among this bunch are the Ultex XL adn the original XL, but the max-grip version is very nice too. I mainly play metal and blues, on an acoustic guitar I use a thinner pick.