stick to A and B rated books. Why risk it ? What can they offer you that is so much better? A few dollars in bonus money? Why do you think sites like SBR are around? Give your head a shake.
You work hard for your $$, you love sports, you do all the handicapping possible, you stress the actual game and when the dust settles and you win something you are gonna risk having your $$ with a risky book?
I see no logic whatsoever
Some guys are just complainers. You know those type of people that are always making a stink about something? Risk all you want with D books but if I may make an analogy, it's like dealing with a doctor. You can go to a licensed one with a good reputation or you can do do what Michael Jackson did and deal with the shaddy doctors.