Be careful with Stox... they used Mayweather to hype their ICO and after the listing on liqui their so called "strategic partners" dumped at half ICO price on the market. It was later discovered that Stox gave free tokens in exchange of "services" to those partners who instantly dumped on the market. Stox has a history of using Stox tokens to pay people instead of the ETH they received during the ICO.