1-1/8 & 1-1/4 front sway bar vs factory 7/8?

Pulled the trigger on the hellwig 5906 1-1/8 solid sway bar, i got to thinking about it and my current 7/8 sway bar is solid, so i cant foresee the 1-1/8 solid bar weighing much more than the 7/8. Was thinking about firm feel but why pay $100 more for the same size solid bar