As much as I love Messengers, Thrill Seeker was always my favorite album from ABR...until Rescue and Restore. I honestly think that is their finest work to date.
The only album that fell short for me was Leveler - solely because of Internal Cannon; the start of that song is ferocious, but then they got into experimentation with mariachi-esque rhythms and crap on that really came off as super cheesy and really, ruined the vibe of the album for me - which is sad because their are some pretty standout tracks on that album: Pangea, Boys of Fall ,and Leveler.
Thrill Seeker, for some odd reason is the only album I don't like from them. Maybe because Jake wasn't in the band then.