Ask YC: Payment Processing

I know this has been talked about before many times; but, looking through it still haven't been able to find a good one.

We currently use Paypal which has most of the features we currently want - no monthly fee - monthly subscriptions - not needing a merchant account

The problem is for a lot of business users and some consumers, going to another site Paypal looks a little "un-professional" and doesn't always just let you put in your credit card information.

I've looked at - Authorize.net, needs merchant account - Amazon, for the U.S. only - Paypal's PayFlowPro, for the U.S. only

I've been looking into 2checkout and they seem to look good.

Any other suggestions?