Ordered mine direct through Phaetus the moment they were released. Its been a good hot end with no issues thus far. I have been plauged by issues with the stock hot end of my Plus4 and I feel more confident with this as it does not have the ceramic head break.
This combined with the beacon mod (got mine through West3D) have finally solved "most" of my issues with the Plus4 and made me start using it again.
**NOTE** This installs different then you would expect. The head sink does not fit in the gap like the original did. You will need to reverse the head sink and its held in place with the bolts, not press fit into a gap.
This was confirmed by others who purchased on the official Qidi Plus4 discord and has been working fine for me. No settings needed to be adjusted, plug and play.