I had a similar experience years ago. I first tried them at a show back when I had much less exposure to good quality audio and thought they sounded meh. Fast forward to a couple months ago, tried them again also at a show and I was floored. I don’t think they sound like any planars I’ve heard driven from the BHSE (MAYBE the Susvara but the timbre is quite different). These required a longer audition time and the right environment for me to be able to appreciate them (superior transient and tone naturalness to the Susvara I heard at the same show, and though I love my LCD2F, I don’t think the LCD-5 are on the same playing field with the Sus and SR009 in technical abilities).