Of the three tools described in the post, Evernote is the only one with which I was unfamiliar. I have taken it for a spin, listing the roads one would use for a car journey from a Yorkshire place to a Berkshire place while adopting a selective approach to motorways. But I, like Librarian at Heart, know the value of "the very low-tech but aesthetically pleasing option of an actual paper and pen notebook". I can whip out a notebook and pen quicker than I can do the login(s) necessary for reaching the Evernote app. The notebook, being a stage removed from the online world, is a little bit more secure. The "elephants graveyard of notes I can’t understand anymore" recognised by Research abc would, in a notebook, be likely to have at least the virtue of chronological order.
I hope my view does not sound too much like the claim, in a 1990s spoof, that undesirable results from a mythical Microsoft product were "a feature not a bug".
I will continue trying with Evernote and see if I get to like it any better.
I told of my enthusiasm for Doodle in the 2010 round of 23things. I continue to use it today. Doodle is not to be blamed for the user error of forgetting that anything requiring a Doodle poll probably needs more than a Doodle poll: a poll to set up a meeting will not necessarily ensure the meeting takes place, and is not a major action on the issue behind the meeting.
I use Google Drive extensively. It is very helpful for the planning committee of an event, allowing details of venue &c to be circulated rapidly and acquire modifications and comments. I'm not sure of the best answer to the data-protection questions that Google Drive can present. Is there a place where private individuals can store things like a Christmas card list or address book online?