Gears, Story is better and I find the whole Universe a lot more interesting than Halos.....kinda pissed that Gears 3 wont see the light of Day until this Gen is over....Wait OMGz

Sony Launch Line Up: Gran Turismo 6 and Legend of Dragoon 2
Microsoft Launch Line Up: Gears 3

OMGZ

Halo for all the reasons stated by disolitude.

I'm in the minority here regarding this: I prefer Halo Single Player to Gears, I thought the Halo trilogy was much more epic in scope and implementation.

I prefer the visceral nature of execution to any Halo multiplayer mode though, so for MP, I'd go with Gears.

Overall, I've spent more time with Gears than I have with Halo, so if forced to choose, I'd choose Gears.

Gears of War for the campaign even though the secound one was dissapointing. The Halo formula ran a little dry after 2. I love online play, but in the end the campaign still matters to me a little more.

Easily, Gears!

Once you learn how to headshot properly in Halo and play it on legendary there's no comparison. Halo hands down. The gameplay is extremely polished.

i havent played either Gears yet...i have the second one sitting here...but i havent got to it yet. i think halo is pretty great though, so it will be tough to beat.

halo.
both are great.
gears 2 better single player halo 3 better multiplayer.
i didnt play gears 1 or halo 2 so i cant judge either.

Halo!

Prefer Halo personally, but that doesn't mean I dislike Gears.