Is This It? - One of the greatest and most influential albums of all time. Near perfection.
Room On Fire - Obviously not as good as Is This It? but still an excellent album.
FIOE - A bloated mess, the worst of their albums. Way too long, way too much filler. Even the decent songs (i.e. the singles and maybe 2 or 3 others) don't match up to the better songs on the previous albums, or even some of the album tracks. I really dislike this album, such a disappointment.
Angles - Four tracks I love (Machu Picchu, UCOD, Taken For A Fool, LISITM), another track I kinda like (Gratisfaction) and the rest ranges from poor to terrible. This is the least consistent of their albums, it has some of their best songs and some of their worst. Definitely not as irritating as FIOE, I wouldn't listen to it as an album but I regularly play the better tracks. Hard to judge Angles because of the wild variations in quality but on balance an okay album.
Comedown Machine - A better album than Angles, not as good as Room On Fire. This album has the consistency Angles lacked but none of the tracks are quite as good as Angle's best. 80's Comedown Machine is the only song I strongly dislike. The best tracks are Tap Out, One Way Trigger and Welcome To Japan. All The Time is good and the most "Strokes-y" song on the album but is their weakest lead single bar Juicebox. 50 50 is good but lacks the killer chorus that would make it great, Slow Animals is a grower, Chances is quite a pretty song and is a nice comedown moment, Partners In Crime and Happy Endings are both good too. CIFCIK is the strangest song on the album and reminds me a bit of Tom Waits. Don't particularly like it but it doesn't really bother me either, bit of a nothing song.
I really wish Casablancas wouldn't sing in falsetto though, it makes it harder to like a lot of the songs (I couldn't stand One Way Trigger at first, mostly because of his voice)