Well, after a driver failure, I'm on my 3rd LCD-3 now. I had one of the non-veiled pairs, so I was naturally curious what the new pair would sound like. I got it a few weeks ago, and the sound is a bit different; bass, while narrowly less in quantity, is even tighter and precise, mids are presented more upfront and the highs seem to have been boosted to a degree. However, by far the most noticeable difference is one of timing; this is one fast pair in presenting details. Everything is crisper, more resolved and tighter. The soundstage also appears to be wider and deeper. I'm curious to find out to what extent, if any, these characteristics will vary over time, in case the diaphragm tension decreases for whatever reason, something to which Purrin had alluded in one of his posts.
FWIW, the serial number of the replacement unit is lower than the one of the pair I had sent in, despite the fact that it was from one of the first batches (ordered on release day and received several days afterwards).