They don't fit everywhere though. The ratcheting head is a little too big sometimes.

I've got long and stubby combinations, long and stubby ratcheting, and double offset box end as well. Which do i use most? The double offset box end. Second would be the stubby ratcheting.

The more different tools you have, the easier and faster you can work. When you see a deal like this, and ask yourself if you should, the answer is always YES. Don't bother with the inch sizes though if you're exclusively working on the car.