I currently have an Onkyo TX-NR809 in for the HDMI board replacement. In the meantime, I started looking at a new entertainment center cabinet since my old one fell apart. I found one I like but it's not really deep enough to accomodate the Onkyo. That started me looking for a newer but second hand replacement with a smaller footprint that would fit inside the cabinet I like. That lead me to find a slightly more modern AVR with a speaker system that I could possibly replace my whole system with. Here's what I've got right now for my Surround-sound system: AVR: Onkyo TX-NR809 with HDMI board replaced Front Surrounds: Boston Acoustics Classic Series CS260 ii Floorstanding Speakers Center Channel: BA Classic Series CS 225 ii Rear Surrounds: BA Classic Series CS 26 ii Bookshelfs Sub: CS Classic Series Sub10 ii Here's what I could upgrade?/switch to for not much money after selling the above system: AVR: Denon AVR-S900W Front Surrounds: Klipsch Reference Series RB600 Bookshelfs Center Channel: Klipsch Reference Series RC500 Rear Surrounds Klipsch Reference Series RS400 surround speakers Sub: Klipsch Reference Series SW110 I know the Denon AVR S900W unit isn't the lastest tech and doesn't have Dolby Atmos but AFAIK it's a few years newer than the NR809 and can do a few things the NR809 can't. From what I've read, the above Klipsch Reference series speakers were originally made for the Canadian market. I've not had any experience w/ Klipsch as a brand but it seems from what I've read on AK they have a good reputation and loyal following. I think BA does as well though. So, would this Denon/Klipsch Reference Series system be much of an improvement from my current Onkyo/BA Classic Series system? Would making the switch be worth the bother?