Challenge Casino is another great casino that also just added Instant Withdrawls! The sign up bonus comes in three stages, up to $1,000 FREE!

1st Deposit 25% Bonus You'll get up to $400 FREE!
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3rd Deposit 100% Bonus You'll get up to $300 FREE!

This bonus is available on all purchasing options: Citadel, Gaming Card, Credit Cards, NETeller, ACH, FirePay, Wire Transfers, EcoCard.

Challenge Casino uses award-winning software giant Microgaming to run there online casino. Challenge Casino is great place to play if you love bonuses, they offer many ongoing loyalty bonuses if you aren't happy with your $1,000 FREE sign-on bonus. Challenge is even a better choice to play at since they started offering Instant Withdrawls.