Kindle 6 or PocketBook Basic 2 614?

Question

Electronic books

The bottom line is that I decided to buy an e-book with about 6000 wooden ones. The above two readers fall into this range, and I haven’t decided which one to take yet, so I want to know who thinks about this.
If I decide to take Kindle, then most likely not on amazon, but let's say here , since there is no money for expensive delivery. I hope everything will be fine in terms of warranty. PocketBook is sold in many electronic stores, so this is a plus, it can also read fb2 without any conversions, but as I understand it, this is not a big problem. So which reader is better?