Which altcoins are best for small payments in terms of transaction costs and speed?
I think Ripple will offer speed, quality and reliability for this category.
In my home country, some business owners are started to adapt Cryptocurrency as another way of payment for their products and services and they started to accept Ripple, Neo and Ethereum.
Ripple is really reliable on this category because it's value is low and transaction fee is lower than other Cryptocurrencies.