from what I've read here, the Wilson product is good but not as much better than others to justify price increase which may be as much as $600-$900 or more- more.
As for Knights, they are well respected but I dont have any direct knowledge on value
either way, I would wait until after the 14th to see what manufacutrers come with, as virtually all will come with their 'new' models after the ban lifts.
That would mean the latest and greatest offerings competing for the rush of new business sure to happen as a result.
It should be good for us consumers, and you with respect to your new choices.
And BTW: Do not overlook LMT. I have an LMT M4 upper that is unbelievable, and they are as good as any anywhere (uppers and lowers and everthing in between)
My $.02