Kobo Aura One for pdf's

Hi

I have been looking for an e-reader to read pdf documents. I have thousands and converting them to other formats isn't practical. I have sensitive eyes and cannot use tablets so am stuck with e-ink. The pdf's are almost entirely text and not graphical.

I have noticed some threads about academics saying they have a similar requirement of wanting to use the kobo aura one to use pdf's but that the software is very bad. I was wondering if this has improved?

Having only ever owned a kindle 5 and never tampered with it I do not knw anything about installing 3rd party software, if I was to buy the Kobo Aura One would I easily be able to install KOReader? and if so would this likely solve the pdf viewing issues

I am currently undecided between this device and the Onyx Boox N96

thanks very much for your time