i had a good read of the forums before i bought my first set- southord c500 slimline 5 piece. because i'm based in the uk i figured these would do whilst i made my mind up about locksport. (also the picks supplied were what were recommended as 'must have' picks in any kit).
i have used these with no problems whatsoever on euro cylinders and euro rim replacements- any wider picks would struggle to fit into the keyway.
however i have just ordered the GOSO 23 piece set since i am interested in some of the dimple picks etc that come in this set.(also at £20 its cheap enough).
Another way of complementing my slimlines was to homebrew about 15 hacksaw blade picks using both southord templates and the romstar templates
viewtopic.php?f=4&t=17326 the hacksaw blades end up the same thickness as the slimlines once sanded and polished.plus they only cost £1 for the 5 blades i used.