What exchange do you use?

[Ballsy]

Hi,

Just wondering what exchanges people are using and if they have any pro's/con's to help others choose.

I'm currently only using GDax/Coinbase, this was simply because when I very first started looking into investing Coinbase looked very straightforward, quickly gravitated to GDax when I started to understand more.

Ideally I'd like an exchange that I can put strategy graphs onto back data, GDax lacks a lot in this area.