"The other alternative is to have a guitar specifically for DADGAD, then you can set it up as best suits."

... which is what I do. Martin 80/20s, medium gauge.

Having said that I can, sort of, recommend the Eagle Newtone DADGAD sets. I used to use these all the time; DADGAD sets for one guitar and standard light gauge for the other. These strings, to my ears, had the best sound of any I've used and tended to last longer than others before going scuzzy. Sadly, though, I had a period of time when roughly one in three 3rd (G) strings snapped when I first put them on the guitar plus a similar number going in gigs. I discussed this with Steve who had a look at my guitars and assured me nobody else was reporting this issue. It kept happening, though, so I decided to try out all the other types I could find and settled on the Martins, none of which have ever snapped when being put on the guitar and which only very rarely go whilst playing - usually when I've left them too long before changing (the Newtone ones often used to go first time out).

I stopped using the Newtone strings probably three years ago and I assume that they will have identified and dealt with the issue which is why I tentatively recommend them. I've got used to the sound of the Martins now, though and don't intend to return to the Newtones.