Enough of the system wars.
Get both. Xbox is a fantastic system hardware wise (plus the moddable stuff you can do with it kicks the PS2's even with the HD enabled) but the sad fact is, PS2 has better exclusive games and wayyyy more variety.

Get the one with the games you want to play, don't buy one to admire

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From a "Family" reviewer: "We Cheer teaches coordination, enticement to lust, women being used as sex objects, and team work."

From Worthy Playing: "We Cheer is, then, for all intents and purposes, the F-Zero GX of music games. It asks for so much, yet forgives so little. It is actually so casual that it's hardcore."