I much prefer physical books, but as I'm adopting a more nomadic lifestyle, I'm having issue carrying my books. Question to ebooks readers, why system do you r

I much prefer physical books, but as I'm adopting a more nomadic lifestyle, I'm having issue carrying my books. Question to ebooks readers, why system do you recommend to read them? iPad? kindle? computer? phone? what's the preferred format? I don't like reading on the computer as I'm too easily distracted. And I had bad experience with kindle (many years ago, it was painfully slow, just good enough for a novel but not suitable for technical books).