Which exchange do you use?

I started buying Bitcoin in 2016 at localbitcoins then i used Xapo and had a really bad experience.
I bought altcoins at Poloniex and Bittrex, now i don't buy altcoins anymore but i trust it.
I used GDAX, but now they rebranded to Coinbase Pro and i love it ! After you learn how to use the website you will love it too. Awesome interface.
Cheers