You've been given $1000 with the stipulation that you must spend it on cards for Commander. What do you buy with it?

Suppose some benevolent stranger gave you $1000 and told you to spend it on upgrading your EDH collection. What would you spend it on? Are you buying a ton of cheaper cards or a few expensive cards? Buying new decks or upgrading existing decks? Buying basic playable copies or bling printings?