Product good price vs. rested on the net; and delivered on time. RAS, delivery Amazon is very good vs the competitors on the net where it takes at least 7 plus shipping. Article of excellent craftsmanship vs the old SB600. Moreover it is very accessible and does not require "fighting" with the manual to understand its use. Moreover the price vs quality of the product is very good. Article recommend to any photographer, even beginner. The flashgun must be part of any basic camera bag.