I'll post some random thoughts on your list...
Belle & Sebastian - This is well constucted pop music, but it does not agree with me in any way. Arrangements are too sugary and I would describe it as "giggle-pop" perhaps. Not really for me.
Papas Fritas - I have not heard of this band.
Blur - Definately a fine Britpop band, but again, not to my taste.
Depeche Mode - The pentultimate syth-pop band. Their catalogue is spotty, but when they hit the mark they really nail it. I have several of their albums.
Dinosaur Jr. - A typical 90's alt-rock band. Never really excited me alot, but they make a nice racket.
Charlatans UK - A vastly underrated band, combining elements of The Rolling Stones, Bob Dylan, and many other "classic" bands, along with many tracks with danceable beats and club-oriented tracks. A giant Brit-pop melting pot. One of my favorite bands.
Jesus and Mary Chain - Not really pop IMO. Much more devoted to the stoner rock/ noise rock category. Lots of loud waves of distorted and layered guitars behind sorted tales of debauchery in the vein of Velvet Underground. I have 3 of their albums.
New Order - The first band to make the jump from post-punk to synth pop/club pop and probably the best in the genre. Some of their album cuts are spotty, but almost all of their singles are absolute perfection.
Shins - I dowloaded 'Chutes Too Narrow' to test the waters here, and I was not too impressed for now. I have meant to listen to this agian but have not found the time.
Smiths - You just can't go wrong with the wonderful layered guitars of Johnny Marr combined with the biting wit and sarcasm of Morrissey. Too cool for school. Highly influntial and essential for any serious music collection.
Pavement - Indie Alt rock. Not a pop band by any stretch. But who doesn't love 'Slanted and Enchanted'?
Stereolab - Probably too experimental to be called pop. From what I have heard of their catalogue, anyway. I really enjoy the band Air, which is somewhat similar, so I should look deeper here sometime.
Stone Roses - Now we're talkin'. The debut album was probably one of the best pop albums of all time. The only ones I can think of off the top of my head that would be better are 'Rubber Soul' and 'Revolver'. I'm sure there are more, but not many. I own everything they ever released.
U2 - Was never really pop as such until 'Achtung Baby', which is a defining album of the 1990's. A near perfect record. They will never record an album this good again. 'All that You Can't Leave Behind' is close, but no cigar.
The The (from Neon Duke's list) - Matt Johnson can make even the most cynical social commetary sound like a good pop tune. He includes such a wide instrumentation into his arrangements it can be hard to describe, but always good. 'Infected' is a bit dated for me, but 'Mind Bomb' and 'Dusk' are wonderful, especially with a bit of help from Johnny Marr. Thinking man's pop.
It's nice to know there are a few people left with good taste.
