To the OP:
Not sure what you mean by "sets". I feel the stuff pre packaged in a plastic box is not the best value. There is some limited use stuff in there.
My suggestion would be to get everything from HF.
Wait for a sale.
Print out a bunch of 20 off coupons and go in several times, bring your family and cronies.
I do have lots more than the list below, many duplicates of sockets, ratchets, wrenches, etc.
All of these are 6 point. Don't get 12 point unless you need a special for a 12 point head bolt.
Rounding of something rusty really *****.
Here is what I use the most:
1/4 drive chrome deep metric set on rail
3/8 drive black impact regular depth set on rail
1/2 drive black impact deep on rail
variety of black impact extensions in all three drive sizes
fixed head ratchet in 1/4, flex head in 3/8, fixed in 1/2.
I do most all the 1/2 drive stuff with an impact.
All my use every day stuff is HF except for the 3/8 rail which is 25 year old snap on, my ratchets are very old sears, (1976 I worked in tires during the summer) except the 1/4 is snap on.
If I had to buy it all over again today, I would get everything from HF.