What does GoPayment do well? GoPayment makes it easy for us to process simple transactions on the fly, either with a tablet or even a mobile phone. We might be selling shirts, we could be shilling tickets - doesn't matter, GoPayment eats it up.
What does GoPayment not do well? Searching for prior transactions could be more intuitive. Come to think of it, I'm not sure that sort of functionality exists in full-form. Customers sometimes request receipts to be re-sent, which involves having to find the transaction first.
What do you wish you had known about GoPayment before using? That I could use it on my cell phone, which is my fault.
Have you used a competitor to GoPayment? If so, how does it compare? We have not.