Which every brand you decide to stick with, I would suggest keeping all 4 tires the same brand. I had one of the original tires on my current trailer wear really uneven, and totally out of character for the other 3. I could have just replaced the one tire and probably been ok. But I decided to go head and swap out all 4.
I had Carlisle tires on my previous trailer, so for me it was a no-brainer. But I did struggle over swapping out the one bad tire or all 4. In retrospect now, I'm glad I did swap out all 4. Peace of mind is worth a lot, you know.