Hi, I am enjoying a pair of LCD-3's which have most recently have returned from Audeze for driver replacements. This time 2019 the headphones sound better than ever but I am wondering what would be a nice upgrade from my LCD-3's? The LCD-4's seem like they may be contenders but I've read too much about treble disparities so I am hesitant not to mention the exchange rate in Canada would make them a $6000 CDN headphones. For that kind of scratch I thought I'd research. Any help would be appreciated. I should mention my amp is an Auralic Taurus MK2 which I like and I am using PS Audio for transport and dac. Perfectwave not Directstream. I like my audio but I must wonder what a headphones upgrade could do. The rest of my system is a Pass x250.5 amp and Pass X1pre with Hales T5's speakers connected with Cardas Golden Reference cables everywhere for signal cables and my AC is with Shunyata Hydras and a variety of ac cables.As nice as my headphone setup is for what it is my Pass-Hales setup is quite a lot nicer than my headphone setup. My phones sound good but my speakers sound better! What would be a nice upgrade to my headgear?