I ordered Sandhill Red Dorkings last year. While they are not perfect, overall I have been quite impressed. I received 13 total, 7 pullets and 6 cockerels. There is quite a spectrum in color and temperament, but that was expected. Of the 6 cockerels, one is near excellent - good color, conformation, and size at 9 months, with a little more attitude than I would like but not unacceptable. He is very protective of his girls, and is learning to be an excellent flock leader from the older roosters. Another cockerel has excellent color, conformation, and a perfect attitude (nickname - lap rooster), but is a little smaller than ideal. The other four will be culled but are not horrible examples of the breed, just not what I want for my breeding program. Overall, I think I got a good foundation to move forward and breed for improvement.
Of the pullets, 2 of the 7 reds are more the CD pattern than the RD pattern, but those 2 pullets have excellent conformation and size. That makes me wonder if Sandhill's CDs, while having imperfect color, might have wonderful conformation overall. Since the CDs don't easily breed true for color, wonderful conformation and size might be the best recommendation you can find. (And all the girls are really sweet. I can't go out to the pasture without them milling around my feet begging to be picked up, or flying onto my shoulders.)
Ordering from Sandhill is different than from other businesses. I understand their reasoning and don't mind their setup. Others will find it uncomfortable. It is what it is, and if you aren't comfortable with it then you probably shouldn't use them. Personally, I admire what they are trying to do and like supporting those efforts with my business, despite the lack of customer service and time delays. But it's definitely not for everyone.