Paula’s choice vs face theory?

I have acne and I have been really interested in trying Azelaic acid again. I’m having a hard time choosing between these two specific products: Paula’s choice 10% Azelaic acid: -has 10% Azelaic acid -has salicylic acid -has plant-derived brightening and soothing ingredients that have a similar effect to benzoyl peroxide -a well know Azelaic acid product -30ml for €33.10 Facetheory Lumizela Azelaic acid serum 15%: -has 15% Azelaic acid -has colloidal oatmeal -has green tea -has chamomile -30ml for €27.49 The little bit of difference in price doesn’t really matter to me since it’s similar. What do you guys think would be a better and more effective product?