It's based on funds, if you only have money for 2 them get that if possible same brand. That's how I usually do it unless I have the funds for 4 tires. I never heard that b4 because your traction is up front so they should have the best traction, awd mainly front tires, you can have ok tread in rear. The front will do majority of the work. Now rwd is important to have 4 good tires, rear for traction & front for guiding vehicle.