Warrenh:
You said: "True, I've never heard your monitors, but I have heard much more expensive Polks, that couldn't go tete at tete with any of the monitors I mentioned."
That right there, says it all...I don't mean to knock on you, but like a friend of mine said once: "If you don't know, you don't know".
Until you listen to those monitors in particular, you really can't judge. You can't judge their sound from what you heard of other Polk models from the past, no matter how expensive they were, because they are different. Technology evolves, so does speaker building knowledge. The LSi line is quite possibly the best line of speakers Polk has ever built, regardless of what previous models costed.
I'll tell you what something. I've never listened to your monitors, but I've listened to the Revel M20s, for all their virtues(and they have many), to my ears they seem clinical. I've listened to the B&W N805, and I prefer the Polks...That doesn't mean I haven't heard speakers I didn't like more than the Polks. I heard a pair of Thiel CS2.4 at a friend's house, and those are DAMN impressive speakers. But even those, are not without drawbacks.
And ultimately that's what we're talking about here, preference and taste. Like I said before, there is no arguing matters of taste. Taste(preference) needs no justification, it is what it is...
You like your monitors, God bless you for that. Listen and enjoy them. Now, THAT doesn't make anyone else's choice any less valid. Nor does it necessarily makes your speakers or any of the ones you mentioned any better than the Polks. They are different, and they appeal to different tastes.
Some audiophiles love tube amps and swear by them...as of right now, I wouldn't spend a dime on a tube amp. That's me, that's my choice, but it doesn't make tube amps invalid, or bad choices. Just not my cup of tea. I'm just an engineer who hates putting up with inconvenience...and I'm not an audiophile, just a music lover.