Phoenix Guards are the BEST infantry in the Order alliance. There can't be no question to that, even with the 20 points increase. 20 PG are already quite resilient, but 30 of them won't go anywhere soon (unless you're THAT unlucky with dice).
4+ 4++ 2 attacks each, rend -1, 2" range. They're just too good.
If you bring wizards to raise them back from the dead (you should) you can bring max 6 of them a turn. I did that in a HH army, my opponent wasn't amused. He focused the 2*10 handgunners right behing my PG with the shooting attack then some of his melee attacks, so he pretty much wiped them, but the PG tanked his remaining charging MAwcrusha attacks and Goreguntas. In my turn, PG got resurrected, Sisters shot, Hurricanum shot and GG and MC were gone