I am VERY familiar with Snap-On tools. In hand tools alone I have over $40,000 dollars. In technical tools, (scanners, A/C machine, Motor-Vac etc etc) I have about $125,000 dollars.
They are without a doubt one of the best hand tools there is. Mac is a good competitor as well as MatCo (I think that is the name). Their is nothing wrong with Craftsman tools. Normally they are built just a bit bulkier, (I think for strength). Sometime the bulkiness can be an issue when getting into a tight area. Most of Craftsman's ratchets have a course tooth design which makes them strong but requires more swing than a fine tooth design. Not making one better than another, just noting some differences I have come across.
For the most part their tools are expensive. But with my shop I really did not care. Number one I own at least two of every hand tool that I would normally use. If one broke I'd go to the back-up. When Snap-On came on Thursday he'd replace them no questions asked.
You will be totally shocked when you see the prices of the hand wrenches as well as some of their specialty tools like ratchet drive Torx bits and allens. A standard set of Torx bits that run from 3mm to 15mm is something close to $200.00. A set for home will be cheaper as you will not need every one. Just the popular ones. That set will be close to $110.00
They sell a product called "Mid-Well" sockets. These are between traditional shallow well and deep well sockets. If you want sockets and don't want to go nuts on buying various sets I strongly recommend getting the mid-wells. It is the best of both worlds.
As far as cost goes you will find the Craftsman brand to be considerably more affordable and still be a decent tool. For home use, I think they will be fine.
Basic set of tools:
Socket set and Ratchet: 1/4inch and 3/8inch drive socket set and 1 ratchet of each. As far as the ratchet goes you will get more general use out of it if it is a swivel head ratchet (the handle can pivot to allow for clearance depending on application).
Wrench set: 1/8inch thru 7/8inch. Comparable metric is 10mm thru 18mm. I personally would get an 8 and 9mm as well as a 19 and 20mm wrench.
Then you will want/need an array of Pliers, Side cuts (dikes), Adjustable Wrench (Crescent Wrench), Vise Grips and a pair of Slip Pliers.