im about to purchase a 07 cobalt SS SC but im wondering if the LSD worth the xtra money?
and WHY??

its worth it, i helps just a little bit with launching and tons with tight turns at high speeds, if you want to put an aftermarket one on its like double the price GM offers. Most car reviews for the ss/sc say its a must

i have it in my 07 and i haven't driven one without but even with it i can spin the tires...It does give awesome handling though..

Also i forgot to mention. The seats come with the g85 and are a nice touch...

no seat option anymore with G85. you only get the LSD and yes you will need it. im in alberta and the snow would be killer without it. but even with the stock rubber on, it is good in snow.

Yeah, the LSD is a must, definately

i dont have lsd in my 07 and im fine, i dont really think it makes too much of a difference until you reach bigger hp numbers from the reasearch ive done on it. i figured id save the money and do some mods with it in the spring but thats just my MO.

I just got my 06 today, and I can tell you off the bat, it helps with torque steer
I wouldnt get one without it.

Put it this way, I thought mine came with it. if I had known I probably would have waited to get one with. dont buy without. it is costly to put it in later.