LS28 upgrade to LS28SE

Has anyone upgraded their LS28 to LS28SE and was it worth it? Can you please give sonic improvements (or not) and total cost.  From my understanding it's a $2000 upgrade. Thanks in advance  :)

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I had an LS28 and moved up to a REF6.  It was better, but not as much as you might think.  Word is the LS28SE is close or equal to a REF6.


Had the REF6 upgraded to a REF6SE and it is definitely better, but hard to say by how much given that the system had been moved to a different location.