I deliberated for a long time to choose between Remarkable 2 and the conventional iPad - and in the end just stuck to the iPad (after trying a borrowed Re-2 for a few days)
* The reading quality & feel to the hands is far superior in Remarkable 2 and it looks much more affordable to entry level iPad, but at the end of the day it is constrained to be just a reading/annotating device.
* For people like me who prefer Android as day to day driver, but occasionally require use of FaceTime or iMessage to connect with others (friends abroad or in group), iPad is very convenient.
* Apple Pencil objectively feels more polished and versatile as a stylus for variety of tasks - note taking, sketching, minor photo touch-up, evaluating paper & reviews etc. The nibs are replaceable as well.
* The software ecosystem around Remarkable 2 still has enough rough edges. It is not that smooth to sync, transfer or update the device. iCloud+GoodNotes integration wins by large margin.
* iPad (and the Pro more so) has a camera which comes handy at scanning and annotating documents quickly (loaded directly to Goodnotes) versus going through scanning and transferring that to Remarkable 2