PastorJay
Friend of Leo's
Consider the El Jimador Reposado Tequila. It's a step up in quality and not much more expensive than the Silver.El Jimador is about half the price of patron and imo a pretty good quality tequila.
In general, from low quality to high, think Silver, Reposado, Anejo, Extra Anejo.
Think of it this way: In your Margarita, shots, sipping, sipping with your favorite person.
Personally, when I make margaritas, I use Reposado.