Lots of people love the Lenovo X220, which can be upgraded with simple screwdrivers to the latest and greatest processors and motherboards using fan-made motherboards.
(That’s how popular they are, fans are making newer motherboards for them. I don’t know the experience, I’m using a very old Toughbook to devel since my needs aren’t great.)
What’s with the hinges? I’ve never had one fail. Granted, I’m no road warrior.