I typically only order hard cover books, usually 10x10 or 12x12. I just checked my order history and the average of my orders were 5 days for processing and I had my books within a few days of that. I always do the 3-5 days shipping also. So basically from the time I place my order to the time I receive it is an average of 8 days total.
As far as quality, I have received books from Picabo, Shutterfly, Artscow and a few others I can't think of the name of right now but the price of PrestoPhoto and much better, the size selections are much better and the quality is is most comparable to Shutterfly but better. The only time I order a book from anyone else is if I have a free offer.
I have done soft cover case wrap books as well and they are pretty awesome.