to gratus you listen, help you - he will.
good luck finding any brands other than martinellis or "boutique" brands (and even some of those have it, especialy the unfiltered types) without the vitamin C in it.
the vitamin C is added for two reasons - first - vitamin C acts as a color stabilizer -the juice stays "pretty" looking on the supermarket shelf under the lights.
second, it's good for the kiddies.
it won't effect your brew at all.
Treetop brand is good, Santa cruz is good, Knudsen is good, safeway select is good, martinellis is great, Costco's Kirkland is good - (there are may others -just always read the label before you buy) for apple juice concentrates (for boosting gravity, priming, OR recontituting and using as your juice) I've used both Senca and safeway select brand -both are good for brewing IMHO.
In primary: Earl Gray hard cider,
In secondary: Blueberry apple Monster
Bottled: "All apple" Apfelwein, Mixed berry country wine, Kick yer' butt Hard Cider, "All apple" Achtung!Apfelwein, Kumquat mead, "All apple" hard cider.
Drinking: "All Apple" Apfelwein, Mixed Berry Country wine, Blueberry Belgian White ale.
comming to a carboy near you...
Redhook ESB clone