I use both XSitePro and Site Build It.
SBI for my major sites and XSitePro to create mini-sites and landing pages. SBI is organically driven while traffic to my XSitePro sites are used typically with my PPC campaigns.
They're both very good. If you want to put up some great sites with minimum hassle, XSitePro is the software to get.
If you want a full-scale web business, you can't do better than Site Build It.
Both are winners in my book! The two together: unbeatable!
Regards,
Tony Thomas