Personally, it's Lands' End's all weather mocs [1]. It should be noted I'm absolutely hopeless when it comes to fashion, I can only vouch for their functionality and comfort. Another commentor also mentioned Adidas Sambas as being a good standard [2].

[1] https://www.landsend.com/products/mens-all-weather-moc-shoes... [2] https://news.ycombinator.com/item?id=17337829