I owned several United knockoffs of the Gerber Mark 1 that were perfectly serviceable and worth what they cost. I've owned plenty of unremarkable United folders that were worth what they cost. I've had a couple of Fury fixed blades that were also fine. "Good" is a subjective measure that must take into account the price point at which the knife was had. While I've no use for United's stainless steel LOTR fantasy swords or any of Kit Rae's nonsense, and I've no use for some of Fury's more exotic junk, both companies have produced plenty of serviceable if low-end knives that were good values (or at least adequate values) at their price points. (The same is true of other sometimes reviled brands like Taylor Cutlery, which nonetheless contains a couple of reasonably decent folders and fixed blades in its lineup.)
There are "good" knives at every point on the cost spectrum. One simply must be reasonable with regard to one's expectations, and keep the product lines in perspective.