Quest88 - My experience with audio equipment at the level your talking about is extrememly limited; however, the deal that I work with is a Focal dealer a I have heard the Scala a few times. I've actually listened to the Grande and Diablo models more.
What I can tell you is that when the Diablo and Grande were powered with Krell mono-blocks the sound simply blew me away. Those amps were sold and replaced with a Asthetix amps and even though they sounded good I was never blown away after the Krells left.
If it were me, I'd use Krell as the baseline and make another brand prove that they sounded better.
By the way, the Scala is a great sounding speaker. I've seen the Stella in the store, but have never been in long enough to get a listen. My favorite Utopia combo is actually the Diablo with a JL Audio subwoofer.
What I can tell you is that when the Diablo and Grande were powered with Krell mono-blocks the sound simply blew me away. Those amps were sold and replaced with a Asthetix amps and even though they sounded good I was never blown away after the Krells left.
If it were me, I'd use Krell as the baseline and make another brand prove that they sounded better.
By the way, the Scala is a great sounding speaker. I've seen the Stella in the store, but have never been in long enough to get a listen. My favorite Utopia combo is actually the Diablo with a JL Audio subwoofer.