i used snap-on, brittal or however you spell it and king dick and others for years in the airforce. with snapon you do get very good quality but if you just need spanners then most reasonable quality chrome vanadium ones are fine for the average guy, however when it comes to specialist tools etc then they can not be beaten.
i have a small green screwdriver i found one day, i abused it and used as a chisel and generally gave it a hard life. one day i realised despite the abuse the blade was still perfect, then i noticed snap on on the handle but hardly visable, its as if the blade is made of something from another planet....the best screwdriver i own!!
i use snapon ratchet rings, screwdrivers and easyouts, and locking wire pliers etc but all the rest is just ordinary kit. cheap spanners are not as lean and slim as good quality items so if access space is a problem then that is when more expensive kit comes in handy