I haven't tried any of those suggestions, regrettably; as I've heard good things about them.

But it's not just familiarity, but also about compatibility: I need to be able to open my PSD/AI files going back decades with absolute fidelity; and I know one of the dirty secrets of other programs that claim to have "PSD compatibility" is that they just read the composite version of the image, instead of being able to import individual layers with blending/effects settings, etc.