Depends on volume and risk profile. There are many very sharp Authorize.Net resellers out there that will work with you to get a great rate for your situation. I've seen 2.2% rates on 50k/mo of processing for low risk customers. Of course, with that you get some additional fees to factor in -- monthly statement fee, international, Amex, etc... but it pencils out to way lower than 3% at a decent volume.

For example, these guys: https://www.netcompaysystem.com

And many of these processors will give you gross deposit which is the only way to make things easy for an accountant. The net fees model Stripe uses is a nightmare for reconciliation at any sort of scale.

This isn't to say I've abandoned Stripe entirely -- there are some cases where it makes sense, when you're actually using some of the advanced features and API, not just a straightforward card charge.

I just completed a Stripe Connect integration that handles millions a month for several clients... but even there you run into half baked/stapled on feelings when you try to produce a full featured process that works at scale. For example, there's no straightforward way to provide a batch report for a Stripe Connect client -- the charge ID's don't match up with the platform account, and the only way to fully map which charges/refunds/chargebacks are in a given deposit for the client account is to link them up by amount and date/time....