For me, Unapologetic was a horrible era for a great album.
It started off well, but it took a six month break and returned with Pour It Up and What Now after Stay was released in January.

Messy

Any others?

Blackout

Britney Jean

Warrior says hi

Unapologetic after the second single

Born This Way.

After Judas, everything pretty much went downhill.

Nothing Was The Same :/
Compared to how many hits Thank Me Later and Take Care had
Also, the HOWGH video was **** and he hasn't even released a video for The Language yet

All Rihanna albums made after Rated R even tho TTT is not an "amazing album".

Warrior and pretty much all of Rih's eras after Good Girl Gone Bad.

Glitter

Bionic

Loud era was great though. It's probably her most recognisable.

Red.

Everything just collapsed after I Knew You Were Trouble when it had so much more potential.

ARTPOP obvs.

It started off great... but then her team decided to release California King Bed and Man Down as singles instead of the obvious smash Cheers...

BTW

CKB and Man Down were both moderate global hits
Also the videos are two of her top 10 best vids

This is actually true. All of those promo singles were so messy, even if they were good iTunes hits for her and gave her good Billboard peaks... that era was just all over the place, the only two real standout singles were the lead and IKYWT.