I think Hudson's wilds would probably get higher grades from people who really know Discus... probably more true in shape, eye ratio, etc. For most of us who can't really notice a difference, though, or just plain don't care, I can't see any reason not to buy from John.
You're starting to make me like heckels now... guess maybe I didn't really notice the depth of the blue before.
Re: the San Merah, they vary depending on mood. Mine aren't in breeding mode (though they are proven) and they are sometimes a deep maroon but can get pretty bright orange/red at times too. When I had two super reds in there (which looked unnatural, like hiliters) they really colored up orange to try to match them. Now there are two younger ones that aren't as deep red, and that seems to keep them on alert. Lately it has been a very bright red edging with some orange in the middle, but a dark face.
I liked the snow white and super reds I had, and maybe some day I'll have a tank with them and some white/orange speckeled types too, but overall I lean towards a more natural look, brown-based, like the wilds.