Fastest phone: Hisense vs Onyx?

Two phones have been launched:
- Hisense A5
- Hisense A6L

Two phones will be launched soon:
- Hisense color e-ink (23rd of April)
- Onyx Boox Phone

I will buy one of these phone, for reading, audiobooks, music and some running apps.

I guess A6L is faster than A5. But the two upcoming devices, are they likely to be faster than the A6L?

As they're pure e-ink devices, I'm guessing no. But hard to tell, the hisense color e-ink device looks really fast in the preview video:

https://m.youtube.com/watch?v=R241f-krUzA

If you own a Hisense A5, do you experience it as a slow device?

Where I am going with this thread is really if an e-ink device would have good enough hardware to handle audiobooks and running apps (Nike Run Club / Strava) simultaneously.