They used to be Playtech. When I joined they had more, and they were all Playtech. When Playtech banned the US & Canada, they switched to RTG, and closed some of the casinos, and moved the accounts over to three RTG casinos. They also changed my currency from the UK Pound to the US Dollar in the process.
Under Playtech, they paid pretty fast, and faster than the Playtech norm. Now it seems they are SLOWER than the norm, even for the US. They hold no attraction to players like myself, used to payment in 2 to 3 days at most. The prospect of 14 days to pay to Neteller has been enough to keep these casinos off my desktop.
The offers are similarly modest to iNetBet, but iNetBet pay much faster. I believe the Main Street bonuses are also CASHABLE, like those at iNetBet, but UNlike RTG casinos as a whole.