LOL, I'm doing this almost every night since I own both.
I'll probably write a comparison here sometime in the future...
For LCD-X, HPA-21 - Taurus: 1 - 0.
For HE-6, HPA-21 - Taurus: 0 - 1.
IMO, YMMV etc.
It would be interesting to compare HPA-01 with Taurus since they are in the same price range.
Vega + HPA-21 + SW + LCD-X is pure magic!