Have used Chargebee in my previous startup and have also recommended to our customers. One consistent thing about Chargebee is thoughtfulness of features and super-responsive customer support.
Xara choose ChargeBee after a pretty deep comparison analysis. Ultimately our requirements and friendly entry pricing won them the deal. We have scaled with them since.
Get this and sleep well. It's a bargain for what it does.
Chargebee is a fantastic billing platform. It's highly functional and insurance in case you ever develop an issue with a given credit card processor you'll be able to seamlessly just keep billing.
We've been customers of Chargebee's for more than a year now.
Can't wait to try this out!!