Mercedes buy Brawn to team up Lewis and Jenson

Mercedes have bought Brawn so Jenson Button is likely to join up with Lewis Hamilton at McLaren.
Great news for Jenson, out of the fading Brawn, but not so good for Lewis who won't have a second-rate team-mate to compete with/against.
Interesting contrast of driving styles - Lewis aggressive, Jenson smooth - is likely to mean very different set-ups for the two team cars. But who will get the best out of the 2010 McLaren?
Good news for F1 generally in a troubled climate.