To be honest, I like them both. Before I sent the LCD's off for repair I thought hands down they were better but I'm not so sure anymore with this newest driver they sent them back with. I honestly wish I had kept the first pair with what the company is calling the old driver. They were originally purchased 3 months ago so I was surprised when I was told by Audeze it is a different driver. Multiple people heard the headphones before they went away. I had the Omni first but was blown away when I heard someone elses LCD-2F so I got a pair and originally felt like wow I made a mistake getting the Omni's over the LCD (which I needed a closed-ish back headphone for work) but now with the newer pair I'm not so sure. Now I feel like the Omni is better and def has a stronger vocal. I'm trying out different tubes and trying to give the LCD's a chance to open up but unsure if this will help as the others were fantastic out of the box. I've tried NOS Mullards, NOS Bugle Boys & NOS Voskhod. I'll continue to post as I listen more and/or get feed back from others.