I have seen a well known high street a/v shop are selling this amp for £199 on their website. I currently have a panasonic sa-he7 which is only dd5.1 (no dts or 6.1). Does the 4300 have PL11? Would this be a worthwile upgrade? I have mission M73's at the front, a M7C1 centre, 77DS rears and a wharfedale sub at the moment and find the rear channel lacking compared to my friends denon reciever and tanoy set-up. What is the general opinion of this Marantz reciever?