Radiohead! Every single album is a masterpiece, they have maybe half a dozen weak songs in their entire career spanning twice the albums coldplay has put out
Coldplay 1st album - ok, for the most part, has a few stand out tracks.
2nd album - some good songs here and there, some really weak songs and some filler
3rd album - FULL FAIL
4rd album - UBER FAIL
I'll give coldplay credit for their start, they way they took that genre and made it appeal, and I have always felt that they are sincere and love what they do. Its just that they arent very creative, or musically gifted or talented at playing instruments. Most of the credit goes to the frontman, and I have heard that they are very energetic and sincere when they perform live as well. I can name a lot more bands that will rank lower than coldplay, but overall if you compare only radiohead and coldplay, coldplay doesnt stand a chance. I will get the next radiohead album within minutes of launch and try and listen to it as much as possible, the last time coldplay released an album it took me a month to even get the album and another to listen to it for the first time. They have gotten boring over their last two releases.