would recommend a custom design, if you have no clue about how to create one. though if you want a site builder i am unsure about it, as i have never used asite builder.
We use a WH Automation tool called H-Sphere which comes with Site Studio site builder ( psoft.net ) .
Hi, there is one coming with Plesk, and if you are using windows server then its free also. http://www.swsoft.com/en/products/sitebuilder/ Try it out