PayPal Express Checkout starts at 2.4% + 30c (across all trans). One might use PayPal for other reasons than just their fees (i.e. your user demographic) but their API is still a mess.
It's completely anecdotal, but we've used eWay for the past 2 years. They've been slightly cheaper than the alternatives and pleasant to deal with for the most part, but any technical interaction has been incredibly painful. The dashboard is a pain to use, and they generally seem oblivious to trends in payment gateways.
In addition, two months ago we were unable to process payments for a period of a few hours due to an SSL error on their secure payments API. Any customer not using a hosted payment page was affected. From what has been communicated to me it was an issue with their CDN provider, but I'm still waiting on the full details. I understand things happen, but a lack of communication from someone who processes your payments is really frustrating.
On the other hand, Stripe have been really nice to deal with, and integration has been a breeze. Things might change once we put it into production, but I'd be surprised if they got worse.
PayPal Express Checkout starts at 2.4% + 30c (across all trans). One might use PayPal for other reasons than just their fees (i.e. your user demographic) but their API is still a mess.