I think I am going to buy an SB-600 for my D40 tomorrow. My local camera shop is selling it for like $185 where best buy has it for like $250. So is 185 a good deal? Also, what is the proper term for this? Is it a flashgun, or shoemount flash or something like that? Also, I have a flash for my Pentax ME-Super, and I could never figure out how to successfully use the thing, I assume digital is easier? Could you guys give me some input on this flash?