...for $549 but the YOGA is known for having hinge issues otherwise I would've bought it!
Hinge issue is fake news or at least overblown IMHO. Maybe on the flex 5 models, but not the yoga. My lenovo flex is 3.5 years old, dropped and dented a few times, hinges are fine. I haven't personally seen any lenovos with hinge issues, and I have around 8 friends with lenovo 2in1s.
If you're worried about the longevity of 2in1s in general, get the slim 5 Mevinyavin posted.
Agav the yoga looks to be limited stock, maybe only store pickup.