Duh, sorry...
Novus IS the good plastic polish.
I made the same errant Maguire's association mistake a year or two ago. I'm not sure why I do that. It is something beyond a similar bottle shape, number, & flip spout applicator though. (Novus bottles are smaller, and not brown.)
I'd skip their finest cut, almost an eyeglass cleaner. The grit is undetectable with your fingers. Like silghtly thick water, lol.