drop shadows

I wanted some help with my drop shadows.. i usually use tracy murphys photo actions but sometimes i see layouts where the shadows are amazing... anyone have recommendations on where i can purchase great drop shadows? or advice on a good tutorial?
anyone purchase shadows perfected by kristen rice? any thoughts?

lol - this is a topic that seems to come up regularly... see here for the latest thread i can remember at the moment... and i think it really depends on the program you are using to scrap with, and your particular scrap style... personally, i'm lazy and love styles, so k studio rocks!

ETA: if you want some good info on shadowing from some Great Scrappers like Sheri and Sara, go up to Search and advanced search for shadowing... both have some good technical advice in previous threads on how they do it in Photoshop...