Since starting FE:H, I've gotten 10 5-stars, however two of them I don't use, and three of them are upgraded.
Pulled:
Lucina
Roy
Ephraim
Ninian
Julia
Jaffar
Spring! Xander
Lachesis
Upgraded:
Nino
M!Robin
Camilla
since i'm poor as a rock, i'm a f2p and i pulled these out of sheer luck and spite.
fun story: the day before the first "legendary heroes" banner ended, i did all of the hard story maps to get enough orbs for robin. 60 orbs later, robin never came home, and I found myself in a heap of 3 & 4-stars.