I've met with a few patio contractors who had slightly different methods. I liked them both but I need to verify if both will provide long-lasting stability. One guy clearly has this has his business, and therefore was a bit more expensive. He suggested he'd dig 8 inches, first with compacted crushed stone, then one inch of of loose sand, then the pavers. The other guy, clearly does a lot of patios/walkways/etc but not as polished maybe, said he does 4-6 inches and does not put the later of sand over the compacted crushed stones. Claims that he doesn't like adding the sand. But, I trusted what he said but I also have no experience. Going with this guy would also save me roughly $2K. Thoughts on depth and final layer of sand on top of compacted crushed stone?