The most important piece of meta-data. Also one of the most important parts of a web page. It shows up at the top of the browser. It is the default title used for bookmarking. Also, it is what search engines also use to figure out what the site is about.
Primary Keyword - Secondary Keywords | Brand
Brand Name | Primary Keyword and Secondary Keywords
If you are trying to rank for a very competitive term, it is best to include the keyword at the beginning of the title tag. If you are competing for a less competitive term and branding can help make a difference in click through rates, it is best to put the brand name first.