Is there a preferred tequila age for Strawberries Por Mi Amante?
The Cocktailians recommend Reposado: "use the 100% agave stuff, and definitely go for the reposado -- you want something with a little age and character". Paul Clarke quotes cocktail luminary Charles H Baker's recipe from 1939, which is non-specific, but Paul also uses Reposado.

Blanco is likely to be a little too light and easily dominated by the strawberries, a good Añejo is probably overkill, so a decent Reposado fits the bill.