Learning about sangiovese I'm just starting to get into wine and want to learn more about sangiovese. My understanding is that the major styles/regions are Chianti (regular, classico, rufina), Brunello di Montalcino, and Vino Nobile di Montepulciano with the latter two having rosso versions?

I want to try some of these side by side to get a feel for the different styles but not sure of the best producers to try. I'm looking for 3-4 bottles &lt;$60 that I  can pick up. 

I don't really have the set-up/budget for super tuscans and aging but hopefully I can add those down the line. 

Thanks for any help.