Okay, first off: Lol, robo-miku.
Now, let's see...
Voice:
Vocaliod-quality. Not exactly my thing.
Music:
Not bad
Dance quality:
It isn't bad but they're not totally in sync and since they're robots there's no way to fix that.
Physical looks:
They were obviously robotic from the start to me. You can see through the arms of the outfits they're wearing so their robotic arms are obvious.
Movement:
Now this I'm really impressed with. The balance they manage throughout the dance is probably the best I've seen from any robot yet.
Over all:
They're fairly good. The vocals still could use some work, maybe add a tiny bit of reverb or something. (I will maintain that the end of the belt note from Luka's Love is war is probably their most realistic note yet.) They're always going to look robotic physically but they're making the movements look more natural which is a vast improvement over the jerky movements we had before. If they make the joints less obvious and the arms the right thickness then they'd improve the realism of the image.