I can't speak to the accuracy, I only have a few bits of hardware, but V collection sounds really good on its own. As for the DX-7, Dexed is really popular.
If you have an iOS device, KQ Dixie is a pretty good DX7 emulation. It’s an audio unit, so you can load it into a host (“DAW”) and add an effects chain, even though it’s on a mobile device
I've owned a couple DX-7s. I just can't get into the original. The DX7 mk2 was a really cool instrument and I'm glad the V has some of those sounds. I messed with FM7 a bit too. I've seen mention of Dexed for years but haven't tried it out.
