Sunex. You can get forged chromoly impact sockets that are practically unbreakable for much less than snap on, mac, or matco. Snap on ratchets and sunex sockets make a great combo.
Or you can buy snap on everything and have 5-10k in debt to the creepy tool truck guy like every other $40k a year mechanic. I have right at $1000 in hand tools and it fills a 13 drawer box. This is one of those places you can be smart with your money.
Snap on ratchets
Sunex sockets, swivels, and extensions
Sunex wrenches
Whatever screwdriver brand you like- I like Kobalt
Harbor freight for things that are easy to lose or not load bearing like magnets etc.
i also keep a full set of harbor freight sockets and ratchets so i have something shitty to loan out when someone wants to borrow tools.
i bought my Sunex stuff through toolwarehouse
http://www.sunextools.com/index.cfm?s=products_all&cat=1