vps cpanel

What is the best and cheap VPS service for hosting my websites ? Note: 10 to 20 websites.

Till now I hosted my websites on shared hosting. But suddenly My sites ranking on first page for main keywords. (I just applied SEO things which I learnt here!) Now my sites getting lot of visitors. But my sites going offline as shared hosting is not enough now. Please suggest me cheap and best...

Good day! I will be building several websites in the future. I have a few questions: Is it worth hosting those sites on a VPS server instead of using a Webhost? Is it hard to setup several sites on a VPS? What about security? Can I run other tools while still hosting websites on VPS? After...