I have a few hundred quids worth of Halfords sets in my shed but the bestest ever socket set I have bout was a small set for £38 from Lidle a few years ago and I have done near everything using this set other than a full engine, its done gearbox changes cambelts starters and suspension changes, I have that set in the boot of my Frontera.
Sadly Lidle only circulate them occasionally and I needed a cheap set for my new job to keep on site, where I wouldn't be bothered if they got wet (rust, thought they are doing good with a liberal coat of WD40 every couple of weeks) or lost but needed reliability in the box (I work on forklift trucks, though not a full engineer) and I found these on ebay
http://www.ebay.co.uk/itm/BRAND-NEW-94P ... 3ccab0e6e3For a budget set you don't mind loosing they are very robust and rather good, they are also six sided sockets, I like that but its a personal thing lol.