maybe its me, I used a red Personna the other day and I could not stand it, horrendously bad shave with it on my Merkur HD, Astra was excellent and the Blue Personna was excellent... for me, the blue was much more like the Astra than the red was... the red blade got one shave and went in the garbage, i have no patience to put up with one bad shave to get to the good ones, the red tugged, pulled, and irritated my skin worse than the Merkur blades did, Astra's performed from shave #1 as did the Personna MedLabs.
so I don't really see the comparison of Astras to the Reds, imho, its a better comparison to the MedLabs. just my .02
so I don't really see the comparison of Astras to the Reds, imho, its a better comparison to the MedLabs. just my .02