I've purchased 5 rigs from EastShore over the past 2 years. In one case they replaced a rig I bought with another model, as they had sold out of the one I ordered. The replacement was more efficient and has a slightly higher hash rate. I had to pay a bit more but it was all good.
They've always delivered. The only time they were slow was with the StrongU STU6 X11 rig. But then, all vendors were screwed up by the manufacturer's delay on that rig.
 So, yesterday I ordered two S19J Pro.