At the moment my only rant about artrage is that the blending tools, in comparison to any other painting based program (even photoshop!) are obsolete. To put this in context, when blending skin tones I may want a specular highlight on the subjects forehead, and a small gradation outwards to the midtone or secondary highlight.
Because the value differences in the specular highlight and midtone, the artrage palette knife assumes 'creating' an inbetween colour will help me out, and in some cases a completely random inbetween colour like a saturated pink/orange/red, which is incredibly annoying, because without destroying what form I had built up I have no way of undoing this mess (without ctrl+z'ing 50 times).
My suggestion to you Mr/Mrs Art Rage, give me a blending tool that blends properly (and doesn't blow my PC up because it lags so bad [<- soft palette knife]).
Also while I'm on the subject, the 'Flat' palette knife, I find, in most instances blends ONLY with the edges of the knife, leaving a plasticy, watery looking mark in between the too edge blended thingys.. kinda' annoying because I am meant to be using a FLAT knife.
Hope the aforementioned made sense.. thanks for reading