I used to play with Bitstars but I wasn't getting enough bonus or comp with them.
I gave up my VIP status with Bitstars because they didn't care that I lost few thousands in a month.
I tried the new Tetraplay casino now for a week and the website and games are much better. They have dozens of bonuses up to 300% !!
As a VIP Tetraplay is now giving me a personal deal in cash back with 0 wagering, really great offer
It is the best alternative I found