When I first started playing around with cars, I bought tools as I needed them and ended up with a real mix n match set. Then I bought a couple of Halfords Professional (pre advanced range) trays, 1 sockets and the other spanners or wrenches if you prefer to call them.
Over time whenever they broken I'd taken them bcak and they'd get replaced after some discussion about not still having a receipt umpteen years later. Lifetime guantee they say..... I did splurge on a decent box to put them all in, which meant I met a decent StrapOn tools merchant, who understands that I'm not in the trade, but he's quite accomadating when I need something. Slowly but surely the Halfords are becoming SnapOn.