We've been quite happy with Chargebee overall and would recommend them. The only downside is their customer support is very bizarre sometimes and a bit frustrating.
For example, they limit API access to my own (events) data to the last N months. I contacted and asked them to remove the restriction, and they said that wasn't possible because the data was "archived". I pointed out that their UI allowed me to see all the data and their page loaded quickly so clearly the data is close at hand. They then said they'd give me access to all my data over the API for one week. I told them I'm not going to build a script that will be broken in a week and instead will just have to scrape their website - they seemed happy with that resolution.