As long as the cage isnt plastic, I dont really think much about it. I have a daisy chain of misc shape and color cages hanging next to my workbench and they all work just fine. Some are 20-30 years old.
With that said...I have bought Ibera cages for a couple recent builds. They were 2 for $9 on Amazon and I liked the design.
If a cage costs more than $15, I will look at it and really wonder why. At $15, you get quality finish, strong welds, and interesting design.