Which E-Book reader is best for reading and making notes??

Hello people,
I want to own an e-ink device for reading and taking notes that is scribbling options.After a lot research I found ONYX BOOX M92.Is this the best??

Should I wait for better versions say upcoming Sony 13.3 or Other ONYX devices or go for ONYX BOOX M92(which ever is best in market??).

(Affordability is not an issue as long as it is $600 or less).

Please Help!!!