I have not bought chickens from either source, but I have friends who bought started pullets last year - Production Reds from the Poultry Hatchery, and they were pleased with them enough they're getting more this year. I did see them, and they looked like the average hatchery chickens.
But, I too have heard some of their bad reviews. At this point, I'd just prefer buying from someone who's focused on quality, not quantity.
The only contact I had with Randy Wilbur was last year when I sold them Swedish Flower Hen & Bielefelder hatching eggs. They seemed nice, but I do admit many of the BYC people I met at Chickenstock last year were much nicer! I haven't seen in person any of their birds, only the photos of them on Craigslist.