I think it's always a personal preference. To say "a lot better" would be way to generalizing. But i'm quite sure you know that

Right now you are struggling with yourself everyday because you simply don't know what to do.....everybody here is talking about the new kids in town and in some rankings the new lineup is set over the Zeus (!). But honestly... you know this game for sure
You love progressive house, right?

For this genre the LX REALLY is unbeatable... no doubt. Pure fun.... as Twister wrote it's a basshead audiophile. Very addictive. But no mid-monster like your Zeus. To be honest i don't even know the Zeus. But i know i'm not up for mid-monsters. I love fat sounding tunings like the LX' or a totally natural, pleasingly warm sound... like my beloved Phantoms.
The Phantom indeed is a matter of taste.... somehow. But this is something you know as well

I love it even more than the LX. As you know i ordered the custom version to replace the universal. I love the mature, natural timbre. It's so classy

Both, the Legend and the Phantom complement each other perfectly if you are up for different genres like me. If you listen mainly to progressive house i really would give the LX a try

.... best with Thor Silver II 8 wire.... and stick with your Zeus?
Btw... i will sell my universal Phantoms for 1250 € (definitely mint) with bal. 2,5 mm Ares II cable. Just in case

But i wouldnt sell the Zeus (as you love it that much) just to replace it with the LX/Phantom combo..... if you aren't 100% sure. And others opinion doesn't matter at the end as we are individuals...