I love your GGGB trinity, too. I think I'm going to always love Disturbia because it was the song that really elevated my interest in Rihanna and I became a stan soon after. GGGB is such a great album, containing all this flawless material.
Yes, GGGB has so many gems to choose from. It's about to replace Loud as my second fave Rihanna album.
I only use Pon De Replay. And even then I haven't listened to it in about a year. Every song just sounds like the same ghetto island Tracfone Ringtones.....I mean....
Lies. AGLM is much more tolerable than Tragedy of The Sun.
AGLM has weird sound quality. Her voice sounds grainy at some points and too stand-out at others. That didn't get fixed until RR. Her production was still iffy on GGGB.
I think I'm going to always love Disturbia because it was the song that really elevated my interest in Rihanna and I became a stan soon after. GGGB is such a great album, containing all this flawless material. 
It's about to replace Loud as my second fave Rihanna album.
I just can't get into that album.
)