I ride with M530 pedals and LG MTB shoes. I average 10,000+ miles a year. Never had a hot spot since I've been riding. Before you go and spend money on different shoes and pedals, try the credit card hack that someone has already mentioned and play with your cleat position until you find a good spot for them. They should be positioned directly under the ball of your feet.
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HCFR Cycling Team
Ride Safe ... Ride Hard ... Ride Daily
2017 Colnago C-RS
2012 Colnago Ace
2010 Giant Cypress