Bestmark BLOWS. I haven't done a shop with them in many years. I've seen enough people with payment problems that I do not want to do another shop for them.
I will say, when I did shops for them, I was always paid in a timely manner, but that was 10 years ago or more. They just haven't had many shops in SoCal, plus I don't go looking at their goofy website either. There are plenty of shops emailed to me by Sassie and Shopmetrics, that I don't really need to hunt for shops.