fieryoOoReviews say this amp is on the analytic side, and the Vali's supposed to be warmer, which is why people like it with the AKGs. Does one sound better than the other? That much, you have to answer for yourself. If you haven't experienced enough to know what sound you like, I say why not try it if you got the money?
I will say that this is a very flexible and versatile amp and dac, and it's probably all you'll ever need to buy for a long while. On top of the nice savings at the lowest price point, I'd say that makes this drop attractive. (I'd personally jump in if it weren't for the lack of funds). Schiit Audio's confirmed that they're not doing anything remotely close to a drop, so you'll probably have to pay full price on the Schiit Vali anyway. Why not take advantage of the savings while you still can with these?