My t470 got finally fully fucked so I'm on the quest to determine how much money I want to spend and where to get what. Either the same t470, or some later models... I remember when I bought mine the t480 was kinda new and super expensive but not sure if it had anything soldered. I know it had 1 battery only, which is nice vs the 2 my t470 has.

The later models under t14 are much more of a wild guess and very fucked.