I have a very limited budget. Lets start there. I would like the Sb-800 but I don't have quite that much money. I would be using this flash this winter for shooting skiing pictures on the mountain. Would the SB-600 work for that? It is about 200 dollars cheaper than the 800. http://www.adorama.com/NKSB600AFR.html That is the link from Adorama that I found. Are there any other options or have I found the best one?