Potato Vodka Neat

I’m hoping to get some good advice. I’ve always known my older brother to enjoy drinking bourbon but apparently he’s switched to potato vodka. This is all I know. He primarily drinks all his alcohol neat except for kamikazes when the other brother is in town. I’d like to buy him a bottle but I’m clueless to brand. Please help. Southeast US and I gotta pick it up somewhere. No time to order online. Doesn’t have to be cheap.