+1 for detective/mystery stories!
Although I am picky - I won’t read just any old mystery book off the shelf. Generally I read through a whole series, and then mope around until I can find another series/author that suits me. When I was a kid I loved Nancy Drew, the Boxcar Children, Sherlock Holmes, etc; then went off on a sci-fi kick during my teen years; returned to detective stories and read through all Agatha Christie. A friend gave me the first book in Laurie King’s Russell/Holmes series, and that’s the series I’m in the middle of right now.
Physical book: For me, staring at a screen just gives a totally different vibe to the activity, so if I am in the mood to read a book, I’m in the mood to read a physical book. Maybe the e-readers that are small and have a less glaring screen would be ok, but I don’t have one, so
Re-reading: Almost always never. Maybe because of the genre I typically read, but unless I’ve fallen in love with a character or the writing is extraordinarily good, I feel like rereading is boring because I already know what’s going to happen.