Hello all; I own an Onkyo SV919THX AV receiver which is Pro Logic receiver only and I must add that I have been very happy with. Additionally I only have two surrounds, two front, one center and two sub-woofers (Atlantic Technology System 350) so I am not really equipped for a 7.1 system unfortunately. Since it is Pro Logic ONLY I am considering upgrading even though the unit has hardly ever been used. Now I am stuck between two options: First Option: I can go ahead and buy an external standalone decoder like Technics SH-AC500D since the receiver accepts an external decoder. This will cost me around $150.00 Second Option: I can go ahead and change the receiver all together and since my budget is tight I have been recommended the Harman Kardon AVR7000 which i can pick one up for around $550.00 to $600.00. What you would recommend, Which one will I be happier with considering the cost? Other ideas / recommendations are more than welcomed!