said by TheAnalyzer:
I am considering the SB400 too, but is it really better than the on-board flash?
Do you have any experience with the SB400?
I don't have personal experience but my brother uses it all the time with his Nikon D40. For indoor shots with normal ceilings, it does a great job. For the cost, it does 80-90% of the photos that a more powerful SB-600/700 could do. Question is if the extra 10-20% of the photos where a more powerful/flexible flash is worth the extra $230.