VAC Signature MKiia SE vs standard MKiia


Strongly considering upgrading our MKiia to the SE.  From those who have assessed the two versions, what are the sonic attributes the SE provides over the standard MKiia?  
mbump
Thought I would "bump" on this.  Always helpful to hear experiential thoughts from the court of public opinion!  

Any updated thoughts ?
I spoke with Kevin and he felt the renaissance mkV actually sounds better than the non-se signature. But its tempting to get the non se used for a huge discount over msrp of the SE.
I found the SE improvements intrinsically more resolving than those offered in the standard MKIIa.  Break-in took approx. 200hrs, but improvements were obvious straight away.  IMHO, the SE upgrade investment is well worth it.  I cannot personally speak to any comparison with the renaissance mkV, though find Kevin's thoughts very interesting.