Al,
I have now had a read and saved a copy in my info library.
I have to agree with Duncan in that it does depend on how much use the unit will get, and how fancy the lighting setups could be if you want i-TTL. If you used manual on complex lighting set ups then any flash units with manual setting will handle that. For on camera use with i-TTL or manual then its a good value flash with a lot of power. No real worries on the limits of continuous shooting from the specs.
My attention was drawn to the slave ability as on price you could get two of these units for the price of a SB-800. Note though, that for i-TTL this only functions at a sync speed of 1/30 sec or lower - SERIOUSLY RESTRICTIVE. If this was the longer term route then I would only consider the SB-800 as i-TTL with Nikons own units is very fancy ( at a price ) but near enough foolproof.
Link to the SB-800 manual so you can compare
http://support.nikontech.com/cgi-bin...i=&p_topview=1
Don