How to choose the best Virtual Private Server hosting package?

I’m looking for a Virtual Private Server hosting package for my growing website at present, but do now know where to start. I’ve already searched the keyword of “best vps hosting” in Google, and have refer to the top 5 results. But still, feel confused among the dozens of recommending options. In this case, can anyone tell me only ONE suggestion based on the personal experiences? My budget is around $30/mo.