"Everytime I think that it just can't get any better - it does! Canon has improved the color gamut, the output resolution and made print even faster. I personally own the Canon i9100 and the output from the new i9900 is noticeably more impressive, especially the reds and greens. It's not the same as using the vivid printing effect or increasing the overall saturation, these prints just have more visual "punch." There's no doubt that the addition of the Red and Green inks have expanded the already photo-realistic output of Canon's 6-color printing system. The only downside is that you now have to buy more ink tanks, eight versus six, but thankfully they're replaced individually and only when needed."