What web hosting company offers the best VPS hosting plan?

I need a VPS (Virtual Private Server) hosting account for a website that I own. My site has recently grown in size and is getting too much traffic for a regular web hosting account. I’m currently with iPage, but they do not offer any VPS accounts. Basically my website is just freezing up because iPage can’t handle the amount of traffic it is getting. I was browsing through some forums online and they said that a VPS hosting account can handle more traffic and is less expensive than a dedicated server. I was wondering if anyone could recommend a good web hosting company that offers VPS plans?