Everyone recommended at 16xx series and yet you bought a 15xx. Why? Audyssey would have the biggest impact on your experience (for entry level AVRs). I doubt many would disagree.
HT: Panasonic BDT 460 | JVC RS600 | 106" x 45" Stewart ST 100 | Marantz AV7005 | NAD M27 | Elac Uni-Fi UF5, UC5, Debut B6 | Focal CMS Sub
Stereo: Cary Audio 306 SACD Pro | Cary Audio SLP-05 tube line level | Cary Audio SA-200.2 | Focal Diablo Utopia III
Den: Panasonic BDT 220 | 60" Panasonic VT60