Awesome talking with a writer online who you can actually tell by their words they have the experience to back it up.
I primarily did wheatpasting, but I did a lot of writing as well. 95% of the time, I just used stock caps (the newer style) with rusto as I rarely got into the fine detail my friends do, but it was always nice having a range on the side just in case, especially with pieces I planned in advance (most what I did was freestyle).
Some guys I know swear by krylon and it's all they use. I never liked it much. I found it too watery (probably didn't try enough different colours).
Haven't painted in a couple years (not entirely, but you know), but I bench an awful lot still (I know a *lot* of train writers), and explore all the graff areas of my city and any other city I visit often to see what new is up.
-spek