While I have not owned a 3806 I have had a 2803 and a 2805, a RXV 2500 and 2600. I would say if you never plan on using an RTA to manually setup the PEQ, then get the 3806 because it's auto PEQ is more accurate. However, if you want manually override of the PEQ then the Yammie is the way to go.