IMO they are technically on the same level as the old timers
The build is a bit cheaper than those, but better than 99% of cheap headphones.
The Pads are also not as good as those, but quite good for a cheap phone
I have no real knowledge about any of the models you mentioned besides the 2050 and to say it outperforms those is to my best opinion a matter of taste and if isolation is wanted/needed, they are a nicer build than the 2050..
The right day, the right music, the right mood the Pro80 is wonderfull, for everyday use they are not my signature, I like them better than the 2050, but the 2050 is more of an allrounder to me..
It is a bit like nice clothes if you wear them everyday, they are not your nice clothes anymore..
That's a very big endorsement, great find on these CANs.