I've been using a backpack for spray apps for years but spot treating isn't cutting it anymore. Plus I want to be able to do blanket apps of fungicides etc. I'm having trouble deciding between a skid sprayer (50 gal), and a ride on such as a Z-spray. I've heard that ride ons aren't as effective for some apps because of the low volume, is that true? I only have about fifty lawns that get spray apps. What would be the best choice?