You don't need a nice website if Google can't index it and position it higher in search results.
All templates based on the Sparky Framework are well optimized for search engines. The template code is valid and passes W3C Markup Validation. There are no inline styles. All CSS code is in the external stylesheet files, even those that's dynamically created. You can check that by looking at the source code of the template demo.
Unlike older versions, newer Joomla versions are well optimized for SEO out of the box. Joomla now use H1 and H2 tags for headings, allow you to enter descriptions for each page, make SEF links better and has many other advantages for semantic HTML code and better SEO. Joomla and Sparky Framework are the best combination for your better ranking!