Yeah but where's Martin's One or Please. His lyrics constantly make no sense.
At first with Yellow I thought it was poetic, using a colour as a term to means to explain his inability to communicate, but three albums in it's clear he has a pretty wonky grasp on the english language.
I like Coldplay, I especially like Fix You which has a stellar guitar lick and as you say builds up well.
But, I have problems with the lyrics. Vertigo is a throwaway pop song, but it still has a cohesive narrative. Fix You is the emotional highpoint, the big ballad of X&Y and it blatently makes no sense. It's almost like what Bowie did, cut up lines of text and randomly joined them up to create songs.
As I said, I don't think Coldplay are progressing musically at any great rate, if they don't come up with something different soon I think the public will get sick of them within two albums...which was the case with the big 80's and 90's bands who didn't innovate. But it's still early days yet for them, they really need to stop stealing other bands dynamics though. A bit of U2 here, bit of REM there, a complete melody line from Kraftwerk here, a complete guitar lick from Echo and the Bunnymen there.