Most forgiving high end speaker 10k-20k?

Dali speakers are "forgiving" or "easy to listen to." TAS calls them speakers you can marry for life, and Michael Fremer gave them a good review in Stereophile. You can find the review on their website.

There are a couple pair of their "Euphonia" line MS5 for sale for $7,500 and $8,200 right now. This is their top of the line normal floorstander type. They could be what you're looking for.

I own their Helicon 400s, which is one step down from the Euphonia line and they do sound good.

I think relatively "frequency flat" speakers are the way to go, and among most good speakers one should appreciate accurate treble as an important part of the musical experience (tonal "cues"), and only bothersome if your system has something wrong with it. If you try to use a speaker as a harshness filter everything cool suffers. Try tubes (love 'em)...or let your ear hair grow out...but keep the crisp! Everything from rustling leaves to a mandolin needs it. Don't put gauze over your earglasses to mute the tawdry aural wrinkles or you'll miss all of grandma's character.

A consistent comment I read in reviews of Sonus Faber loudspeakers is that they convey detail well, yet the music almost always manages to sound beautiful. I've auditioned a few models over the years and I'd have to agree. If you have the space, the Elipsa should be a good choice.

"With great recordings it is fantastic but with poor recordings it brought out all recording flaws."

Audio dealers love to hear things like this.

If the flaws exist, they exist. IF the system filters these somehow to make the flaws sound more tolerable, you can be sure it is doing the same to the good stuff in the music as well. Works kind of like make-up. Take that for what its worth....

Counter to intuition perhaps, lesser recordings sound best when played on a system that is clean and highly free of distortion top to bottom. THat allows the more subtle good things to play and tip the balance towards the good. My estimate is that 80-90% of the recordings most people listen to are good enough to affect a music lover who cares about sound quality.

Now if you are one of the breed that music cannot be enjoyable unless the sound is perfect. then you are scr---d to a great extent perhaps, because a relatively small % of recordings approach perfection. They are what the producers want them to be. You can like it or not, but that is what recorded music is. It ain't perfect!

Tell us more about your room and listening preferences and I will attempt to provide an end to end recipe for a rig that can deliver the goods but is also "forgiving" for moderate cost.

Well, you know have several years worth of speakers to audition:)