I'm wary on this.
The 360 is plagued with manufacturing and design problems (which as shown by Microsoft's Gaming Division taking a $1,000,000,000 loss).
The PS3 is still not getting any exclusive releases, and is still pricey (though much less than before) compared to the other consoles. Many people seem to think the PS3 is not selling as much, but I've read statistically, comparing PS3 sales to the 360 after the same amount of time, both consoles are quite even.
The Wii is selling like hotcakes at the moment, but I just don't see long-term interest in the console. (To me, the Wii still targets a younger age group, despite Nintendo's insistence on this being otherwise.)