Build Joomla 3.0 Website or migrate it from 1.5 Website

we have a small joomla website from a small club. there is a moderate budget from this site. the page is made with joomla 1.5 and artisteer template. site should be updated to newest version. so migrate the 1.5 to 3.0 or install joomla 3.0 and take content from old page and figure out a nearly the same layout for page. please feel free to discuss our problem with this page. thanks a lot!