I tried my hand at grafting queens last year with good results. This year I'm thinking about buying an II breeder to graft from. I'm looking to improve varroa resistance/tolerance by doing this. I usually keep around twenty hives and as many nucs/mini nucs. I produce honey for local sale and also sell a few nucs and last year sold a couple of queens. My question is what is a good source for the breeder and what strain should I look for? Most local feral bees are very aggressive so last year as I was learning I grafted from my most gentle hives. The resulting queens were good but the gentle hives (commercial Italian) hives they came from had poor varroa tolerance. I'd like to use a VSH queen to graft from to reduce the need for treatments but docility is very important as well. As far as sources I've seen New River an VP queens but I'm unsure which strain would be best. Any first hand experience is greatly appreciated. Thanks