Good poll, I have some thoughts regarding to this:
First: both decade, century and millenium ended at December, 31, 2000, so Crush isnīt post millenium
Second: for me everyone of those albums has something lacking.
Bounce has load guitars but is mixed with some mediocre ballads that lows the overall outcome.
Have a Nice Day has a production I donīt like very much and some songs are full cliche.
Lost Highway has a twist to country but lacks of rock energy in general.
The Circle has some of the most "brilliant" songs post 2000, but production again and some song fillers ruins it in part for me.
What About Now loses part of its potential because of the production but I think it has too many songs of the kind of songwriter that in this case is not too much my cup of tea.
This House Is Not For Sale has some strong songs but the vocal delivery starts to clearly fail in spite of production efforts.
2020 clearly lacks of the same for me although has in it maybe what I recogn as their best song since Real Life.
And Forever is better on production and is more humble in pretensions, broadcasting some good feelings.
Letīs add to all of this something that is particular for every person, and that is the personal situation that we were going through at the release of every album and that, we want it or not, influences on what we percieve of that album, so I would choose Crush, if we admit that itīs post millenium, lol, and What About Now if itīs not the case.
So I donīt know which chance of those two to push:
Crush if it were post millenium, but it isnīt.
What About Now, instead.
Iīll vote when this is cleared.
Cheers.