@racinchickins covered it quite well, but I wanted to reply to this as well. I got a group of chicks from them this year (split with Racin) and I'm quite satisfied. It was harrowing, having never gotten chicks in the mail before, but it actually went quite well with only one DOA, so that was a bit of a relief.
I went into it aware that they don't communicate well. I researched what others' experiences had been and read enough about them, so I was comfortable without having to call or ask about anything. If you want to ask them about their operations, etc, they recommend on their site to send an email with multiple questions so that they can answer them all at once.
One thing I think Racin touched on is that they fill your order with what they have, and if something doesn't hatch well or their breeders aren't producing enough eggs, they refund you and fill your order with what they have on hand. Someone here on BYC recommended to pick one or two breeds you want in particular, then fill the rest of the order out with breeds you could do without and make note of that on your order form so that they know what to prioritize for you. I didn't see that recommendation until after I had sent in my order, so I did miss out on the Colored Dorkings I wanted really badly, but they gave me a full refund for them and filled the order with Dark Dorkings instead, which are growing into gorgeous birds with the Dorking personality I love, so I don't feel any worse off for it.
All in all, I'm satisfied with what I got and would order from them again.