Tommy Duliba was the 1st person I ever bought shot and wads from. He was great to deal with and one of his loads is still my load of choice (probably always will be). That load has been a proven killer for me. Unfortunately, Tommy isn't selling shot anymore. I always enjoyed talking with him.
I've bought from Ronny Savage as well. I load one of his 20 ga loads for my son and it has done well for him. I also load for 12 ga (even though I hardly carry one) using one of his recipes. I've never talked with Ronny, but he always responded quickly to any emails I sent him.
I enjoy loading my own shells and killing turkeys with them. But in all fairness, loading your own was the only option when I got started.