I didn't say five GREAT albums.
I said any band that puts out five or more albums likely will have have their best album within the first five (but not their first). Bands like Nada Surf, My Morning Jacket, Wilco, Old 97's, Neil Young, Drive By Truckers, The Smiths, Belle and Sebastian, The Clash, Brendan Benson, Devotchka, Dr. Dog, Dwight Yoakam just too pull off a few from my ipod.
Bands that only put out two or three albums are flash in the pan bands, are much more likely to have their first album be their best.
You listen to Coldplay? That's so gayyyyyyyy.