I wasn't aware of their build quality degradation. I've been using T14s Gen 3 for a year now and I thoroughly enjoy it, the chassis is magnesium and really sturdy. Something must have happened around Gen 5 time.
The worst for me was also my first one, T570. Two motherboard changes because of a flex-y body that put too much pressure on the hard drive connector. I had to use it for a few months because my main computer had to be fixed. I thought I can get more time out of it - nope. That flex-y body probably put too much pressure on something else and after many attempts (for some reason) of resetting the CMOS battery and using it a little, the thing would go right into a boot loop. I bought a new T480 (can use the battery from the T570! :D ) and this is soo much sturdier. Also have a T470p -- besides my screen issue, that thing is a really sturdy.
I have a P14s Gen 3 (so basically a T14s with the power-hungry GPU :D ) from work. I don't think the fit and finish is great, but it properly feels sturdy at least.
