I felt the same exact way before I heard the LXSE. Although that sounds amazing, I personally think an OG LX with the Updated W9 DDs that does it a bit cleaner (yes, as amazing as the bass is, I feel it can be cleaner but more of a preference thing) would be even more interesting. Or both
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I felt the LXSE is a lot more similar to the Aure Elixir which most people haven't heard. It has a slightly drier overall presentation with much more lower treble being emphasized. To my ears, it loses the magic that makes OG LX special, mainly the thick, warm rich timbre that still manages to be very technical, detailed and spacious. They're really compliments, and I feel others who have owned the LXSE agree that it is not just a slight tuning shift that is similar to adding a silver cable on the OG. It really does sound like a different IEM despite those w9s going to work (again, more similar to Elixir than OG from memory).
Just to piggyback on others, Sony Z1R focuses more on an addicting, quick decay subbass with less midbass focus, meanwhile LX bass is definitely much more visceral and "boomy", in a good way. Z1R has somewhat a U-shaped, slight recession in the mids but it surprisingly works well for the signature. LX is L-shaped but the mids are very present and warm, inviting, yet detailed. Z1R has the more active treble, which can come across harsher, meanwhile I don't think anyone can view the LX treble as harsh as its very smooth and extended. (LXSE, on the other hand, can get a bit hot depending on cables, and other owners have confirmed the same). The contrast of the dark signature for OG allows for nice sparkle. Technically, LX is superior with larger stage width and depth versus Z1R.
The "bass bleed" comments is likely just how an L-shaped signature may come across, with the bass being the predominant focal point. But with time, as many noted the LX needs for both brain burn-in and IEM burn-in, you realize how much more the OG is with the lush mids and laid back but very well extended treble.