I'm a fan of A Whisper...
anyway,
1. X & Y: The first Coldplay album I listened to from start to finish. I don't know, sometimes it drags on a bit and bores (like the mid-end of Low) but overall it had the most rhythm and energy. I guess a criticism is that the "energy" is forced.
Top Tracks: White Shadows, Fix You, Twisted Logic, Talk, The Hardest Part
2. A Rush of Blood to the Head: Great stuff. It's the mid-range of the original Coldplay trilogy, and has some great songs. Tracks 1-5 are probably the best sequence of tracks Coldplay has had. Somehow, though, it shifts into a lower gear in the middle (Green Eyes, Warning Sign) and while those two are great tracks, it's the small bit that pushes it below X&Y.
Top Tracks: Daylight, Amsterdam, Politik, The Scientist, A Whisper
3. Viva La Vida or Death and All His Friends: After its initial release, I was impressed with Coldplay's evolution on this album. For some reason, though, many of the songs just don't have that same kick of the past albums. I can't explain it. Guy, Will and Jonny were turned up on this one, and I feel that it should be number one, but this doesn't evoke the emotions the same way as the past albums. It's only because of a few top-notch tracks that this beats Parachutes.
Top Tracks: Death and All His Friends, Life in Technicolor, Viva La Vida, 42
4. Parachutes: Premier soft rock. This is a personal taste issue: this just wasn't as good as the others, and tracks like High Speed and Sparks seemed to drag on. High Speed fit much better in the Blue Room EP, which is one of my favorite records of Coldplay's. It's good, though, since bands should improve with each record.
Top Tracks: Don't Panic, Trouble, Yellow, Shiver, [Life is for Living]