If I were doing it all over again, I would purchase SK chrome socket sets, Sunex impact socket sets, Wright wrench sets, and screwdrivers from whatever manufacturer you prefer. Unless you are prepared to drop serious coin on a true mechanic's set of tools designed for people starting their career as a mechanic, I wold avoid the large tool sets. I haven't come across a single one of the "lesser" tool sets that didn't have significant omissions that will have you running out to buy individual sockets, wrenches & etc. on a regular basis, at least during the first several jobs you perform after buying your set.
I will admit that I am partial to SK tools because my first ratchet and set of socket at the age of 12 were SK, but I honestly believe that the socket sets that SK offers are good value propositions. I purchased the SK 62 piece 1/4 & 3/8 metric socket set (94562) and then picked up fractional sets as I came across good deals.
I have been exceptionally pleased with my Sunex impact sockets. Sunex's 1/2 in impact socket sets may offer the best bang for the buck in the tool world. As far as I am concerned, buying another brand of impact sockets is indicative of an underlying mental illness.
As for Wright wrenches, they are the best feelings wrenches in my hand, and I have no complaints with respect to quality. They are not the cheapest wrenches out there, but neither are they what I would consider to be exceptionally expensive. Deciding which brand of wrenches to purchase, like screwdrivers, is a very personal decision. I would do plenty of research to eliminate known stinker brands and go from there.
At least one other person mentioned buying used tools. I can confirm that you can save a significant amount of money buying used. I purchased almost all of my hand tools used off of Ebay when I recently rebuilt my tool collection (I was wiped out by a burglar several years ago), and on a strict new-item-to-used-item comparison, I definitely saved a lot of money. However, this only works if you are not in a rush to purchase you tools, you have time to scour new listings on ebay a couple times per day, and you have sufficient willpower to avoid buying items you don't need. If you answer all of those questions in the affirmative, then buying used may be the way to go. However, appreciate that 99.8% of tool listings on ebay are not good deals, and when good deals are listed, they tend to go fast. On the other hand, I haven't had a single problem with any of the tools I ended up purchasing on ebay with respect to them not being as described or otherwise defective.