I've dealt with them for years, always have been paid in a reasonable time.
I did have a dispute with them on a series NHL bet a few years ago, forgot the teams, but it was a large dog (like +300, or better ) in an early play-off round. The bet won, and they didn't want to pay until the entire play-offs were over, that's BS. I got it resolved in about a week.
I've heard many complaints about them, esp. from European players. They shouldn't be one of your first books, and balance should be kept small. They often have the best lines when betting against popular teams like Lakers, Yankees, etc. Their limits on totals are $220. Customer service is poor. I don't bet much there often, but I have an instinct when they will have the best line.
Their website is often down. They are best used to bet dogs close to gametime.
Doug