Just watched the reviews. They look really nice figures, I might have to get them! I generally speaking don't get more than 1 version of the same character (although I am beginning to change that outlook), so Slug will probably be my main incarnation of Slag, or at least until that third-party FOC figure comes out; if the Not-Swoop (which I really need to get) was anything to go by, it should be great.
Scorn looks like a great character in his own right. If my customizing skills were up to scratch I'd buy a few and paint one up in Energon Cruellock colours.
Also, I'm not getting the Vangelus hate. Peaugh gives very thorough, in-depth reviews, but they seem a bit too clinical and dull for my liking. Optibotimus does good reviews too, and I've found does a great job with comparisons and making up my mind what to buy, but I find he waffles on and reiterates the same points over and over a it too much. Vangelus is unique in that he manages to make his reviews genuinely entertaining whilst still remaining informative, and also gets a point across without an hour-long review. Generally speaking I'll only watch Peaugh and Optibotimus reviews to get an idea of how good a figure is, whereas I tend to watch Vangelus reviews over and over for the heck of it. I dunno, i like his goofiness. You can't be dead serious about everything after all.
Of course, we all know the best reviewer is in fact Thew.