Yes - I've been to the last 2. They're good - lots to look through!
I've found some of my real treasures there - but mainly from just one or two vendors.
My only complaint would be that they don't seem to attract new vendors - the same people have been there both times. Not necessarily a bad thing but fresh selection would be nice.
DRC is just media and - I'd guess - 90% vinyl
V V is perhaps half vinyl - but it's probably safe to say that will vary based on who decides to sell. I will say vinyl seemed to be less expensive at V V than at DRC