I was a bit disappointed in the Customer Pricing App due to it constantly hanging in order to go through my entire catalog. They said it was because I had so many variants and it took only hours at first then the last time it took almost 2 days to propagate any changes. I also tested Wholesaler BUT it still charges tax to your Wholesale clients) :(
Very sad that Shopify is making it very difficult for people to sell wholesale by not offering better options.