Been on this journey 10 years now and have enjoyed the anticipation of every purchase. The waiting, the opening of the product, the first listen, the break-in....I've loved every minute.
But as much as I have enjoyed so many IEM's, I have been able to poke a fault at everyone of them in one way or another. In my long list of ownership of what my ears have heard, the perfect IEM would fall right in between what I heard in JH13 and JH16. As far as a universal...it would fall between UM3X and W3. $400 can buy you an unbelievable quality sound. Seems odd you have to immediately spend 3X that for a custom.
Having said that, the $400 JH5 I purchased 2 years ago was the best audio purchase I have made in my lifetime. It's amazing, period!