This is by no means a thorough, detailed or well planned test. So take it with a grain of salt. For quite a while I've been using a sub, 5 Mk. I Eggs and a Denon AVR-3803 as my primary AV system. With movies I've been pretty happy with it and I've been feeling that music, while not fantastic, is OK, too. My secondary system includes a Yamaha RX-V595aRDS receiver and my old B&W 570's from late 80's. Today I unplugged my rear Eggs and replaced one of the B&W's with an Egg. I only compared them for a few minutes using the balance but was shocked with the result. The Egg sounded very monotonic and sounded like the music was coming from the bottom of a barrel. God-awful. And this is what I've been happy listening to! I was prepared to having a sound with no lows due to not using the sub but even the singers voice (which I would expect to be in the Egg's range and not the sub's) sounded very lifeless and hollow. I admit the receiver's not a very fine Hifi amp, but I'm sure that's not the only reason. The sub might make a difference, but would that affect the vocals, too? Any way, I decided to finally upgrade my primary fronts with something more musical. I was also going to get rid of those ugly old black B&W's but now I'm not so sure.