I have a SBI site and I've been pleased so far with the results. My site has been online about 6 months and its up to about 100 visitors a day. The major strength of SBI is that they can take a newbie with absolutely no experience in website building and teach them how its done in the most efficient way. I have gone from knowing nothing about how something gets on a computer screen to feeling pretty confident about being a webmaster.
The other good things about SBI are the tools and forums. You won't find any better ones on the net. The only down side is that they are expensive compared to some other programs ($300 a year).
I would determine my major needs and compare to the features of SBI before making a decision.
