I read mostly printed, I’m lucky to have a radical bookshop near me so I’m happy to support them even if their prices are a bit higher than average. I’ve also got some good discount books from some of the larger bookstores, I had a 100% off coupon if you can believe it.
I read on my laptop 95% of the time, almost always pdf. I take notes and highlight in all different colours, and then i rarely ever look it again.
Lately, printed only. Not a big deal for me, but my partner is a huge fan of printed books, so we order a couple every so often.
Printed books and mobi's on my Kindle. When i get anothee reader it'll be epub.
Though I prefer a book in hand, I read PDFs on my phone/laptop because of space and MONEY.
I like reading on paper much more, but since I can pirate almost any book I want, using my e-reader is just way more convenient for me