I made this upgrade over prophecy neck because it was (at least I thought) more than logical that new neck that is coming soon (ET neck) has to be stronger than prophecy (and we can not acquire blue crux by salvaging prophecy neck). I was aware that prophecy neck is currently 'BiS' (which should not be in my option due to materials required being way cheaper than VT neck). I've recently (2 weeks ago) upgraded my VT neck from stage 3 to stage awk3 in order to prepare blue crux for upcoming ET neck.