No, not disappointed at all. Just a little embarrassed for spending $24 for a slightly better version of what I already had. That's why I got out of my audiophile-in-training phase well over a decade ago. Spending huge amounts of money on barely noticeable incremental improvements just struck me as dopey. I suppose if it's your passion, but I figured out it wasn't mine.
But, this was worth the time and money. Always cool to at least try something new.
Though, I will admit I'm seriously considering picking up the HD of Beck's Sea Change. Possibly the best headphone album of all time.