Best churn cards?
 

I've just finished churning the signup bonus for CSP. What other credit cards have similar signup offers of around $400 that can be redeemed as statement credit or check? Thanks.

Doesn't sound as though you are talking about churning--which means getting the same card two or more times and getting a bonus each time.

If you want to know about the "best" bonus cards a little searching and reading on FT will give you a list of possibles for the best cards for you, bonuswise.