I consider BAT to be a very successful token. Also their entire platform and development around the entire project. This token has a three-year history, and I think its rapid growth is yet to come. BAT token has my full confidence.
If you are considering expanding your portfolio, I would invest in proven cryptocurrenies such as: Ethereum, Stellar, Litecoin or smaller projects such as: Lbry, NRG, IQ cash and the newer OGN token. You have to decide for yourself.