Sorry I didn't see this 2 weeks ago
64Audio don't make the V-series anymore, you have the A-series customs which are a fair bit more expensive than the 'equivalent' V-series customs. Mostly due to Apex I imagine, but also probably because their products are more well known than they were a couple of yrs ago, so I guess they can charge more than they did then. No idea if the equivalent A-series models sound different to the V-series & if so how different.
If you're looking at buying V3 or V6 'pre-loved' (that's such an icky term
) & having them reshelled, let me know - the V3's were my first CIEM in 2013 & I bought V6S early 2015 so can give you thoughts/impressions of those if you like.
So far as 'regrets' go, nope, none whatsoever. No more buying foamies or worrying about non-detachable cables crapping out like with universals. Comfortable as the proverbial to wear (accuracy of your ear impressions is everything so far as this is concerned).