I had previously owned the Denon AVR-3100 which is basically the same as your unit other then the 3300 has DTS decoding. I upgraded to the Denon 2809 and 3808 and can tell you the difference is huge. The biggest thing you are gaining by going to the AVR-1713 is Audyssey EQXT room correction that makes an amazing difference in sound quality. You also get Dynamic Volume and EQ. The difference will be night and day. I went with the 2809 and 3808 because I needed a lot of the legacy inputs that are not found on the newer models like S-Video for my Laserdisc player and phono input as well as a full set of Pre-Outs to run separate amps and since I have an Oppo 103 Blu Ray player with dual HDMI outs I can still do 3D. If I did not have these unique requirements I wouldn't hesitate to look at the 1713. I noticed that Denon has a price reduction on the 1913 right now if some of the other features are of interest. Good luck.