Another Swaybar thread

A front sway bar is definitely worth it on a street driven car. Especially yours, since those .89" torsion bars are still undersized unless your plan is stock width bias ply tires.

Hotchkis:
Pros- Beautiful craftsmanship and design, gloss black powdercoating, very detailed instructions but some applications require welding, great customer service. 1.5" diameter hollow front sway bar. Sway bar tab location is not in the factory location for the 67-72 cars, tabs are included to be welded on. Non factory tab location gives additional tire clearance for wide front tires. Fit and finish on the Hotchkis stuff is about as good as it gets.
Cons- Price

Hellwig:
Pros- Great design, great craftsmanship, very detailed instructions and usually have bolt on mounting options. Two versions of the 67-72 front sway bar- #5906 solid 1.125" bar, uses the stock 67-72 sway bar tab location #55917 hollow 1.25" bar, is a "pro touring" design that moves the sway bar tab location and allows for wider tires. Both versions come with sway bar tabs that can be bolted on. Hellwig bars are currently on sale at Summit, and are less expensive than Hotchkis to begin with.
Cons- Hammertone powerdercoating isn't as sexy as Hotchkis' gloss black, hardware is quality and works great but not quite as nice as Hotchkis

Bergman Autocraft:
To be fair, I haven't used one of these bars so I can't give a ton of info. BAC now sells a hollow, 1.25" diameter front sway bar for 67-72 A-bodies. Price is similar to the Hellwig bars, and Peter Bergman (@GMachineDartGT) is a member here and has great stuff and great customer service. I use a bunch of his stuff on my car, I just already have sway bars for all of mine. He also sells great weld-on sway bar tabs, which can be used for other sway bar applications if you have a welder and want to skip the bolt on style tabs.

PST:
I haven't used one of these bars either so I can't give a ton of info. They're a solid 1 1/8" bar that uses the factory tab locations, which will limit tire clearance like the Hellwig #5906 or any factory bar. PST is a forum sponsor and offers a members discount, and their customer service is great.

Addco:
Pros: super cheap, bigger than a factory sway bar
Cons: cheap hardware, lousy instructions, basically all the problems you'd expect from the cheapest offering on the market. Better off just saving up and getting a better bar, you'll be happy you did

I have Hotchkis sway bars front and rear on my Challenger and a set for my '71 Dart GT. On my '74 Duster I run Hellwig bars. Super happy with the Hellwig bars, they function great and they would be my go-to sway bar unless I could get the Hotchkis bars on sale. The Hotchkis bars are just flat out beautiful pieces, but they cost the part too. I was lucky enough to get a couple of sets of the Hotchkis bars by taking advantage of a few sales and some discounts at Summit back when they used to do big discounts for the holidays.