The DSi shatters and fragments, which is more effective at maiming and disabling a target. On the other hand, the N97 remains whole, for greater penetration through tough surfaces. Both, however, are fun to look at.
The ultra-hip French gaming culture magazine Amusement recently published an RFID-loaded special edition. The company was kind enough to ship me a copy to check out.
You could recreate this effect with a $60,000 Lego self-replica...if you were only as perfectly-formed as the ladies from this photoshoot.