Reckon & Quicken - What is the difference?

No difference same software. 

QuickBooks® and Quicken® will be renamed and come under the Reckon brand name 'Accounts' 

The Reckon Accounts personal range and business range (previously Quicken® and QuickBooks®) will continue to be enchanced and supported by the Australian company Reckon for many years to come. 

Reckon will be focusing on a single brand name, Reckon.