Marantz SR-7002 VS SR-4001

[sandman6662]

Okay this is the ? I have the Marantz Sr-4001 And I'm going to upgrade to the SR-7002 Just for the Codec's DTS-HD -Master Audio & Dolby True HD & the RS-232 port for upgradeing. Now Looking at the way I set up the 4001 I have the Sony Blu-ray set to PCM and the SR-4001 set to PCM . Now really if I go to the SR7002 If i set it to PCM I would'nt even use the DTS-HD /MA and D-True HD .So really should I even do the upgrade in all reality. Is there going to be any benefit for this upgrade, and the cost. Mind you i will be upgrading the Sony BDS-300 Blu-ray when the Marantz BD-8002 comes out later this year< this is not a ? I will be doing this ,I only bought the Sony Blu-ray to test out bluray & get my feet wet.plus to start buying Movies .Any input ideas OPN's welcome . thanks for you'r time , And really try to help me justify this , I will picking up the new Marantz SR-7002 on MAY 2nd ,Also got a really good deal on it ,I'll be trading in My SR-4001 Revc, CD-5001 & DV-4001 plus some cash . This way I can recoup what I also payed for them . LMk thanks agian