Which card is better? CitiBank Secured MasterCard or Bank of Ameica Secured Visa Credit Card?

I want to get a secured credit card. Which card is better? CitiBank Secured MasterCard or Bank of Ameica Secured Visa Credit Card. What is the difference between Mastercard and Visa? I want to built my credit. Please tell me which card i should apply to. Also how much $$$ should i put on the [...] http://bit.ly/nSfqkV