Wii if you're into fun and games for everyone.
Xbox 360 for the hardcore gamer.
I have what's dubbed as a "Wii60"; both systems. I use them both for different reasons. The Wii is great for family type of games and innovative use of the Wii-mote. The 360 is great for the hi-def gaming and the fast paced action of the first person shooters.
The Wii makes you say: "Ooooh, how fun!"
The 360 makes you say: "Damn, look at those graphics...hell yeah!"
The Wii says to you: "I will make you have lots of fun!"
The 360 says to you: "I will pwn U with my l33t skillz!"
The Wii is innately Wi-Fi capable.
The 360 requires a $100 component to be Wi-Fi capable, but it works well.
Both systems have games available for download:
The Wii has classics like Super Mario Bros. 64, The Legend of Zelda, and F-Zero.
The 360 has PopCap games like Zuma and Astropop along with a slew of other games that are a blast to play.
The Wii makes it a bit more difficult to buy Wii points (used to purchase games).
The 360 lets you add Microsoft Points wherever you need them.
Let me clarify that last point: With the Wii, if you find a game you want and don't have enough points, you have to back out of the menu a few times in order to get to where you can add more Wii Points. With the 360, you press the "X" button on the same screen and it will take you directly to where you can add points. This may seem like a miniscule detail, but it's a bigger difference in terms of making it easy to buy downloadable games.
The 360 lets you download a bunch of demos and trailers.
The Wii does not.
The Wii is...well...it's wee.
The 360 is only slightly smaller than the original Xbox.
The Wii has The Legend of Zelda: Twilight Princess.
The 360 has Gears of War.
(These are both pros of one and cons of the other).
Both systems have wireless controllers.
The Wii can play Gamecube games and has a place for you to plug in old Gamecube controllers, making the Gamecube obsolete.
The 360 is having some issues playing some older Xbox titles, making it not fully backwards compatible.
What it comes down to: both systems rock. By far, getting a Wii60 is better than getting a PS3. But in terms of one over the other? I can't really tell you. The Wii is cheaper than the 360, but also lacks the graphical power of the 360 (it is not
a hi-definition gaming system, but it is
next-gen). I paid $500 for my 360 (premium system plus wireless adapter) and $330 for my Wii (console plus two bundled games from Costco).
If you need instant gratification, the 360 is available now with a pretty good sized library of awesome games, most of which are either first person shooters or racing games/sports titles. The Wii may be a bit harder to find for a while and its library is not quite as large (mainly because it's a month and a half old). But it has The Legend of Zelda: Twilight Princess
. I've been playing that game for weeks now, have 42 hours of play time logged on it and am probably about another 5-10 hours from finishing it. So it's well worth the purchase.
The few 360 games that I've finished (first person shooters, which normally I detest on a console - I'd rather play those on my PC, but they work quite well on the 360) I managed to finish in less than 10 hours each, but the multiplayer makes them much more fun. Like Gears of War...
My next long game actually will be on neither system. It'll be on my PS2 (Final Fantasy XII). Which I still play a lot (the PS2, that is). Why? Because it has Guitar Hero I/II. And being Asian and all, I have a bit of a fetish for rhythm games.
Final verdict: The Wii barely edges out the 360 due to its lower price, included Wi-Fi, and list of potential great titles. If I had to put a number on them, I'd have to say that on a scale from 1-10:
Xbox 360: 9/10
Nintendo Wii: 9.1/10