I'm an ag machinery mechanic. I wrench on things that are bigger, tougher, rustier, and tighter than you will typically find in automotive. Craftsman has been just fine for that.
I have no brand loyalty. My box runs the full range. Brands I can think of off the top of my head, in my box, are snap on, craftsman, harbor freight, ingersoll rand, irwin, gearwrench, napa. There are more, but you get the point.
In 4 years of doing this, I have broken two wrenches, 0 ratchets, a few hex/torx bit sockets, a few allen wrenches, and a few HF air tools.
There is nothing wrong with a craftsman ratchet. Snap on may be more of a pleasure to use, but from a functional can-it-get-the-job-done standpoint, there is nothing wrong with a craftsman ratchet. The mechanism is coarse, the finish less than impressive, and it's just a generally ugly tool, but I didn't buy it to look at it. I've had cheater pipes on it that I was certain was going to shell out the ratchet guts, but it just keeps on taking punishment.
Their thin profile ratchets are much nicer. 60 tooth mechanism, much smoother operation, nicer finish on the handle, etc, and they are still quite affordable. The handle isn't as friendly to having a pipe slid over it, but that's why I still keep my craftsman RP rats in the box.
You don't have to go all in on this. Buy one or two snappy wrenches, in the sizes you commonly use, and compare using them to others. Be objective. If you see a difference that justifies the price, then get a set. If not, think of all the money you just saved.
I have craftsman's flare wrenches, and they've never let me down, but I'd still be tempted to consider SO. If there's anywhere you absolutely don't want a wrench to let you down, flare nuts are probably where it's at. The nuts themselves are (why!!? WHY!!?) almost always made of softer material

mad:


) and if you do mess one up, you're possibly replacing an entire line instead of one nut or bolt.
When you're just starting out, I'd buy what you need, when you need it. Anticipatory buying is great for having what you need before you need it, but not so great on the budget. I've made some anticipatory purchases I was very glad for, but I have others that have sat in my box unused for far too long, and really just wasted money for me. I'd encourage you to buy what you need, when you need it (or when you see an awesome sale price on something you are *SURE* you will need/use). Save the anticipatory purchases for when you have a few years of experience. At that time, you will certainly be a better judge of what you might need that you don't yet have, than you are right now. Besides which is the point, if you are just starting out, immediate needs will be presenting themselves on a fairly regular basis.