My 2012 Retina was solid, lasted for 7 years till the battery just started going. Had they not glued it in I would have replaced battery and kept going.. hunted for a replacement and really not happy with anything. A compromise was switching to a Razer Blade Base (here in New Zealand we have Consumer Gaurentees Act - so even if it's iffy quality next 5 or so years I can get it fixed for free). From a quality perspective still doesn't really touch a 7 year old machine.... yes it's awesomely fast and at least upgradeable. But the trackpad definitely not the same sensitivity & consistency, chassis I think is ever so slightly warped, fan and heat when it's plugged in is a problem, and screen, well....