I'm going to go ahead and assume your "question" is "Which console is the best?" to which the answer is "none".
The fact is each console offers something different. I personally own a PS3 and a XBOX 360, and my household shares a Wii. ( Live gamertag: Calmec87, PSN account: Calmec87, I'm pretty easy to find)
For casual gamers i think the Wii is a wonderful console, especially if your more concerned with gaming with friends in your living room. It offers the most "unique" titles such as Mario, Zelda, and other Nintendo oriented franchises, so if these are the games you're interested in, then the Wii is for you. Furthermore, parents who are purchasing a game for young children will find the Wii is more suited for kids. I am NOT saying the console is only for children, i quite enjoy playing it myself. However, most parents would be amazed to find that there are video games that won't keep your kids sitting on the couch for hours, but instead jumping in front of the TV until they're tired. My major gripe with the Wii is the controls, more often then not I'm reaching for the gamecube controller in place of the Wiimote. Its just a personal preference.
The Difference between the XBOX 360 and Playstation 3 are more subtle. Most games that I play are available on both. If you are looking for a certain game, or games, then it's a good idea to first find out if they're on one console or both.
Online play is a huge deciding factor these days, While it is free to play over PSN, Xbox Live is a paid subscription ( i pay about CDN$60.00 every boxing day as i originally activated my account on Christmas a few years back.) A lot of people look at this as a "win" for the PS3, however you get what you pay for. Xbox 360 has more online enabled games, and the matchmaking process is much faster.
The PS3 plays blu ray, that is a definite plus, and is the reason i originally purchased it. Since then i have purchased and played many great games on it.
The final "subtle" difference that I will discuss is controls. The Xbox controller differs from the playstation, and i find it to be better for action games, racing games and shooters. Sony has left their basic design unaltered for many years, and its a winner. The PS3 comes complete with "dual shock 3 sixaxis" controllers which are a great concept, and work great. The PS3 controllers are much better for Fighters, RPGs, Sports and other games which require a better D-pad. The Dualshock controller is timeless and also a widely copied controller design for PC games.
So after all that you still haven't decided? want my opinion?
I've played a number of games in the past few weeks on my PS3 that i was extremely disappointed with. I have the newest revision ( the flat black, "slim") PS3, and despite it's greater technological prowess over the xbox 360, it suffers from longer loading times, screen tearing, and audio and video "glitches" not present in the xbox 360 when playing the SAME GAMES. the Xbox 360 is more refined, the games look better and sound better. Both my ps3 and xbox 360 are connected to my sony Bravia 42" LCD HDTV via HDMI, so there should be no reason for the noticeable difference. A simple Google search will show that I'm not the only one noticing.
The other thing I'm noticing is that the "Primary" triggers for most games on the PS3 are L1 and R1. The analog triggers L2 and R2 are much better suited for this, and in some games it cant be changed. This is a make or break for FPS and TPS games, and its a huge setback. This is not a problem with the Xbox 360. Although this may be the fault of the developers and not Sony itself, I'm the consumer and shouldn't need to justify that, if the game is easier to control with an Xbox controller, that's what i prefer to use.
i could go on, I prefer the Xbox "gamerpoints/achievements" ranking system over the PS3's "trophies" as well as a few other things, but I'm getting to far from the point. I could have posted my opinion in a few lines and gone on with my day, i chose to give an answer that is as unbiased as i can.
Some people are going to prefer one console over another, and that's okay. But forcing your opinion on other people is impossible, not to mention immature. I prefer the Xbox 360 and i've explained why.
Do your research, plan your budget, ask questions. That's not just the best way to buy video games, but the best way to buy anything.
I've been playing video games for 20 years
I currently build arcade machines as a hobby
I have: atari, NES, SNES, Sega Genesis, N64, Gamecube, Xbox, Xbox 360, Playstation 3. I play them ALL and have bared witness to this same argument with every new generation of consoles.