Red dots: What's the difference between Barska & Tasco?

[ninepointer]

Looking at online pics of the basic Tasco & Barska red dots, they look exactly the same as my no-name red dot. What's the difference, if any? Are these the same optics but with different printing on the side?

 

[P of PDent]

For the most part they are the same unit as they would come out the same optics plant in China with a different names on them. The only difference would be warranty which would be one year in most cases. Phil.