They both are good brush producers. For the price you could have 10 Yaqi brushes or 1 Paladin. I have silvertip badger brushes from both companies and honestly cannot tell a difference between performance. Value for money vs performance on both synthetic and badger knot brushes, Yaqi is very hard to beat
In saying that and knowing what I know now, I would forget the above options and obtain a custom brush made to your own specifications with advice and guidance from great local artisans brush makers such as TF Customs or Forgotten Art. I know TF Customs has a live YouTube channel where you can participate in the making of your own brush. I can attest to the quality of both TF Customs and Forgotton Art shaving brushes as being very high quality.
But as someone who now has 3 Forgotten Art Brushes in the space of 2 months, I can't recommend them enough. Have a chat to Irish and see what he's got available or get a custom and see what he has got coming in knot wise