How do you pick the RV Parks you stay in ...

I prefer CG's that aren't just "parking lots". As such, I'll research a site on the 'web, and look at on Google earth. Website photos are sometimes helpful, but you need to realize they are usually taken of the best parts of the CG only. Reading reviews on Google is also helpful, but again you must take these with a grain of salt! Price plays a lesser role in my choice, although I'll always avoid KOA's due to their exorbitant rates. Here in Western Canada, I will most often choose a Provincial Park campground, as they are uncrowded, have lots of trees and space between rigs, have reservable sites and reasonable prices.