This looks a lot sturdier than my J's Racing front strut. Might have to take a look at these and purchase one soon.

 

Does it make a big difference in cornering and rigidity?

 

I would say the beefy DC strut bar does feel it stiffens the front end a bit now. Inital turn-in response is a little quicker.

I wouldn't say it made a huge handling improvement by itself, but when added with other suspension mods it can only help.