Ozaron
I'm not a fan of these kinds of marketplaces, have never liked eBay let alone the rest. Took me a long time to trust Amazon despite its size, prevalence and so on, and even now I try to insist on Amazon fulfilled orders..
Just prefer avoiding the chance of being ripped off rather than have the experience to deal with it. Get me a direct distributor or retailer any day. Poorly translated Chinese no-name products get me gritting my teeth.
Well, as far as Ali goes - There are several manufacturers who sell on Amazon, but are able to offer their full catalogue on Ali and are cheaper as they're selling direct to me. That's whay I prefer Ali wherever I can, and avoid paying the Amazon tax.
I also find their ratings far more reliable, as you get them from all around the world rather than just the English ones. Makes it easier to sort the good ones from those you'd rather not take the chance on.
For me, Amazon-fulfilled comes with warning bells about their warehouses and the poorly treated staff, as well as all the other dodgy big corporate stuff they're usually tied up in.
To each their own, though.