My Panasonic Blu-Ray player is getting real long in the tooth. It was a very highly rated Blu-ray player some five odd years ago. LOL But lately the time to load and play a Blu ray disc has become excessive and annoying. My system consists of a Marantz AV7005 processor, a Velodyne SPL1200R subwoofer, and Ascend Acoustic Sierra One bookshelf speakers in the front. I would probably never use any of the networking features. I am really not into that. But, I do care about the audio aspect. I looked at my local Costco and all the Panasonic, Sony, and Samsung players are in the $89-$99 range. Does the BDP 103 SOUND $400 better than the Costco offerings via HDMI? Also, would I be able to use the 103 in place of my current Marantz CD 5003 standalone player? Would it match the Marantz as far as SOUND quality for CD playback ? Standard CDs only. No high tech stuff. LOL Any help at all would be appreciated.