That's not well rounded. That's just stupid.
Anyhow, I like Radiohead, but more for their less known tracks. Big Ideas and True Love Waits are two of the most beautiful songs I've ever heard. They aren't as good as they used to be, and they've started to become a band people name-drop to be alternative, but they're a very good band on all levels.
Coldplay, on the other hand, seem to have started believing their hype. I personally find them to be the sort of music middle class people put on in the background when they have dinner parties. They're safe, unemotional, bland and rather repetitive. "Don't Panic" off the first album, on the other hand, is superbly concise, emotional, catchy song and the fact they're capable of stuff like that just makes their newer stuff even sadder.