I have used an IdeaPad S540 for about 5-6 years. Upgrading RAM, WiFi modules along the way. Was bummed when Apple’s Mac Pro died on me 11months with no warning. And went back to IdeaPad again (this is where I gave up on Thinkpad). So I would swear by it. Not the current one, it’s got soldered RAM and I am less of a fan, but it just works - no issues.