Amiga Format was king. When I was a kid I used to buy loads of mags. Mostly computer - the odd bit of filth (I worked in a petrol station) which I would sell on for a profit after I photocopied or scanned it to sell round school. White Dwarf and more comics than I could afford.
But now I just get Private Eye, sometimes Mens Health (when it says guaranteed results - my arse!), Canoeist, MicroMart.