Fadr.com from SongtoStems.com

It is just Demucs 4 HT, but paid.

"My assumption, Fadr uses Gain Normalize [for instrumentals] was right [...].

Demucs 4 HT seems to get a cleaner result. The rest = practically identical." And someone even said that vocals in VirtualDJ with Stems 2.0 had less artifacts on vocals.