You might want to think twice about the shoes unless required. I've tried a number of shoes, and they just aren't wide enough or have enough lift in the heel to comfortably and reliably heel/toe. As you know the pedal positioning on our cars is less than optimal. I have a size 11 foot, but still can't reach the pedals right unless I have the right shoe on or get creative.
If you left side / right side of the foot method, I recommend a worn out pair of running shoes as they'll transmit information and be able to span the canyon between the brake and gas pedal that even Evil wouldn't jump.
If you use the classic heel on the gas/toe on the brake method, you're more flexible than I.
If you use the reverse heel on the brake / toe on the gas method, I just plain have trouble doing that quickly and reliably without bare feet. You're better than I am
As for brands, I've tried using more the stylish pseudo-racing shoes by Puma and Speedwell. The Pumas were slippery on my rubber GT pedals. The Speedwells were better, but still too narrow.
At any rate, I just found on the track that I couldn't trust my feet like I could while wearing running shoes. They're more grippy and wider.
If you want, I'd get a pair from
www.Zappos.com. You can try them out for a weekend, and send them back for free. If you like them, buy what you want. If not, not loss.