Having actually played Ludwig Classic Maples,Keystones , Legacy kits as well as vintage Super Classics with seamless Acrolite,Black Beautys and Supraphonics,I can say without fear of contradiction the they all sounded,played and looked great.I agree with the sound observation. None of the LUDWIG kits I've heard him play do anything for me in the sound dept, can't say its despicable, just not inspiring and certainly not as good sounding as the GRETSCH kits he's played over the years. The way he tunes and plays does have something to do with it.
By comparison you'd have to work hard at getting a GRETSCH kit to sound off, or at least Vinnie would have to work hard at it, put effort into it. Consistency and ease of getting a good sound, not a lot of drums have that sonic attribute.
I can see Vinnie going to DW, look at the emphasis J Good puts on working hand in hand w/artists, Im sure he'd love to have Vinnie on board. DW is supporting A list drummers like those drummers envision being supported. The DW door opens wide to someone like Colaiuta, hard not to want to be a part of that.
Thousands of drummers will agree with that assessment.
Your comments concerning Ludwig drums are partisan and bias.I've had the complete opposite experience both personally(since the 60's) and having actually heard Vinny play his Ludwig kit.