I cannot read paper books while biking indoors with vertigo. The series referred to with the bike will have to be on DVD. The series referred to with the Hillerman will have to be on paper. I don't really do audio books--they engage just the wrong parts of my brain in most circumstances. (Driving is the main exception, and if I get to be driving again, I'll have enough music to hold me for that for awhile.)

So for the long mystery series on paper: I mostly read mystery for setting and character. One or the other can be "just okay" (so far, for example, the Hillermans are strong on setting) as long as the prose is not scream-worthy. I am not attached to the central mystery being difficult to solve, if the prose is good and there's some of setting and/or character.

I can see where a list would be very hard for you to make right now. Mine was pretty hard, too, but I think it was good for me to do it. (Which doesn't mean you have to, of course.)