I do a lot of suspension and brakes, so I'd have to go with my favorites being:

1. Snap-On MG325P 3/8 impact gun (most used tool I have)
2. Snap-On ratcheting, flank drive combination wrenches (nearly unbreakable and they don't flex like Gearwrench)
3. Snap-On adjustable pliers wrench (great for frozen tie rods)
4. Makita 9.6v 3/8 cordless impact (2nd most used tool I have)