Question Should I buy the B450M MORTAR MAX or B450-A PRO MAX?

Dec 15, 2019
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I'm in a bit of a panic buy to order a motherboard so that it can arrive in the next day. My choice currently comes down to:
B450M MORTAR MAX or B450-A PRO MAX
I'd really appreciate any advice to help me choose. They are the same price and look pretty similar.

My PC's Specs:
CPU: Ryzen 5 3600
Motherboard: To be decided!
RAM: 16GB 3200MHz DDR4
Storage: 240GB SSD, 1TB Hard Drive
Video Card: Nvidia GeForce GTX 1660Ti
Case: Corsair SPEC-DELTA RGB
Power Supply: Corsair TX-M 650W