Paint Tool SAI - Souji

I don't want a different post or different concept, I just want to try various programs I have in my computer

I have SAI (my main program), Photoshop (edit my work), Corel Painter 11 (I usually use this program for a long time ago, but the version is 8), OpenCanvas (I used this program on my previous work, it's good but have many problem), Paint.Net (make me feel nostalgic, it's like Paint, but more option)

Now I'm really interested in IllustStudio but never try before.