xbox360 all the way. LIVE is the best online service, and for some reason nintendo and sony just lag behind in gaming. xbox always puts out the best games, and most people who actually play games have it. The only reason wii has sold more is cuz its cheap and it supposedly has universal appeal. But as far as serious gaming goes, 360 wins hands down.
The wii, it is the only system with decent motion sensing technology. Much more fun at parties and with friends over. even if xbox has halo, wii has mario party, wii sports (much more fun to play), mario kart, and many more games that are simply much more fun to play with a group than any other system. Its online service is in fact terrible, but its free and it gets the job done.
If by 'serious gaming' you mean playin halo by yourself for hours on end, then by all means xbox wins, but the wii is just much much more fun.
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