I wouldn't say it's the best, but, I can't pick a best console at the moment. They all have their pros and cons.
Wii has an awesome control scheme, but, bad graphics and bad third party support.
360 has a year more time for developers to get used to it, but, little overseas support, and limited control scheme.
The PS3 is massively powerful, but, no one can take advantage of that. But, Sony has tons of exclusive developers and franchises.
(Ratchet and Clank, Metal Gear Solid, Killzone, Sly Cooper, Jak and Daxter, Final Fantasy, etc)