In general, brakes are a crummy place to save money.

If they run true and don't cause a vibration when you install them, then they will likely last as long as the next rotor. The differences apart from cost will be in surface rust, and in cooling, due to the design of the internal fins. That last one impacts brake fade, and is the biggest reason to go OE.

Haven't used Mayle rotors. I have used lots of aftermarket rotors. Given the quality and price, I would use OE.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue