I been using aliexpress ortho with my 5150's.I purchased for $15 2yrs ago edit almost 3 now. it has been fine. I also have 2 chapparal 1329 and a couple bullseyes but have not had time to do any comparison yet. Used the chap scaler was on my dish. Was leary because price too good to be true but has absolutely worked fine, if I had any issue would have swapped it out long ago. Maybe build quality varies and i just got a good 1. It is not a 1329 clone does not have machined steps like 1329 has, it has tapered transition instead.