You should not limit yourself to only 1, 2 or even 3 ways of getting paid. Use at least 2 - 3 credit card processors in a cascade, add a solid check processor for the US markets, declined cards or check transactions you should send to either Chargemelater.com or 123Bill.com - add a telephone billing option for those surfers that prefer that, direct debit solutions for EU market and so on...
- in general, OPTIMIZE OPTIMIZE OPTIMIZE!
