the last time I brewed a kit was the first time I brewed at all.
almost all the recipes I brew with regularity are my own evolutions, though I do use JZ's Amber and most recently, majorvice's helles, as 'house recipes'
if I am looking to create something new such as last year when I started on the "Dunkel Project" I'll consult JZ's BCS or online, but I tend not to like a lot of the recipes in the BCS, so it may only be to see what level of Carafa Special he used or something like that to get a ballpark and go from there.
honing in recipes is part of the fun for me, but not as much as the taste testing.