I used e3d X nozzle for this test, first time I tried X nozzle, they are support to have some polyfobic coating that makes plastic not stick to them ... well ..
I am running an E3D NozzleX in my v6 heaterblock, mainly because crashing a brass nozzle into something tends to deform the nozzle enough to throw off the alignment of the dual nozzles on the Chimera. And although these are quite pricey when compared to a brass nozzle, they are still a fairly cheap way to ensure that things will keep on working the same for a reasonable amount of time.
So far I am happy. PETG stringing makes little to no mess, have not yet seen those dreaded black blobs in a print that occur when the nozzle picks up stringing and drops it on the print when buildup has passed a critical amount. Whatever sticks to the nozzle is easy to remove.
Regarding cheap clones of whatever: you may get less than what you pay for, but you will never get more. Accurate machining and good quality base materials are often not required to make parts perform well initially, but accurate machining keeps parts performing well day in, day out. Compare a Papst fan with Chinesium. Day 1 both work well. Day 100 the Chinesium fan makes a lot of noise or stops working, the Papst keeps on humming like it did on day 1.
Frustration continues after the joy of saving a few bucks is long forgotten. In the end buying decent quality stuff saves money overall. Higher initial expense, but less money spent on failures and replacements, higher resale value, less headaches.