I need some SEO optimised high quality articles written

Num. of articles: 10
Words per article: 300-400
Blog/website url: telephones.expertmarket.co.uk
Information for the blog/website: We sell quotes for telephone systems, among other business products and services
Industry: Technology
Topic: VOIP telephone systems
Tone: Formal/Professional
Outline & Structure: Here is a comparison article that can give you an idea of the type of content to include. http://telephones.expertmarket.co.uk/10-best-hosted-pbx-phone-products-virtual-voip-solutions

The branded articles should include some company history, benefits of choosing them, VOIP products offered, and the prices of some of their offers.
Extensive research needed: yes
Extra notes: The document below includes the keywords for each article, as well as a short description of what to write about.