Muffin Baking Question

I have a couple of recipes for making 'jumbo-sized muffins" and thought I'd buy a mold for them, but am having a hard time finding a jumbo-sized cupcake mold, and instead finding what's labeled as "Texas-sized" muffin molds.  What I've been able to find out is maybe the Texas mold is is an in-between-size between a standard and jumbo?  
 
I know everything's bigger in Texas....  but once you get  past the standard size muffin mold, does size really matter between a Texas mold and jumbo?   Where did this come from?

Texas is the biggest so the phrase just fits.
I would buy the Texas sized if you can't find the jumbo ones in a local hardware store.