After looking through the Husky, Kobalt and Craftsman $99 kits pondering about stocking my new toolbox I have come to the conclusion that the Husky kit is the best deal for that use. The Husky comes with the most sockets, Craftsman comes with the most 1/4" drive screwdriver bits to bring up the tool count, Kobalt comes with the most wrenches. Kobalt has the finest tooth count on the ratchets at 90 tooth where the Craftsman and Husky are 72. The Kobalt has the nicest box I think with extra storage in the third drawer although the Craftsman is the only one to have a latch for the drawers, the Kobalt does have a removable top shelf though so you can take out the three drawers and the top rack. Quality on all 3 is likely identical...
That said, I might get the Kobalt kit tomorrow and use it for my travel kit and put the Husky kit I got last year in my new box...
Not saying the kit you got your son is bad, it is definitely a good starter kit, wrenches are lacking and he will likely need to add to it, but just starting out I would not complain about getting those... the quantity of tools per $ on any of those kits is better than you can do anywhere else. Heck, it's a minimum of $15 for a good ratchet so there's $45 then you have $20 per set of sockets and you get 4-6 in any of those kits so it's more than worth it just there...
If I was making my money working on stuff I'd probably still start here and fill in with tool truck quality where needed, I've been in the business long enough to know what can take some abuse. Eventually if used on an impact you'll break these sockets but that'll happen... Myself I seem to mainly break the sockets that just say a size on them and any non impact rated reducer from 1/2" drive to 3/8" drive or 3/8" drive to 1/4" drive... I'm getting a better assortment of sockets where I don't need adapters as often though...