The SoS Is an awesome weapon, but he has so little time to use it D: (He Beats Lyn when he has the SoS and she has the SK)
I got Roy to Level 20 around chapter 7. After that, he was useless. (He takes EXP away from everyone else. And unlike Pre-Promotes, he doesn't actually use it.) At his promotion, you could finally use him again. (Plus, the whole not changing sprites thing was annoying. >.<)
I use Stat boosters... Hector really doesn't need them, so it matters to me.