This benefits only those processing $15.5K - $30.0K per month. Otherwise, Intuit's Gopayment at $12.95+1.7% is best.
https://docs.google.com/spreadsheet/ccc?key=0An_-Z6kZBAXndFF...
Addition: Gopayment is also better than Square's standard 2.75% for anyone processing more than ~$1,200 per month