zwiftinsider.com has all the information you could ever want on which bikes and wheels to choose, which ones are faster, etc.
Basically, the tron is still the best all around bike unless you are doing massive climbs (I think). One of the new frames might be about the same or slightly faster, but I can’t keep up with all the changes Zwift makes. And they seem to change attributes a few weeks after a new frame is released anyway so it gets slower for some reason? Then you have the bug with the dura ace groupset making certain bikes slower right now… so I just stick with the tron.