When I was in school, one of the lecturers who I used to look up to says that the software is not the issue! Of course, I followed his thinking as I was very immature in my Works. Believing and holding on to that belief , it seems that my stuff never caught eyes, hell, I didn't like it, everytime I created a piece , I will be looking at it: What did I just draw. That was with photoshop, don't get me wrong, PS is a lovely tool for sketching quick photobash. But it lacks Something. Recently trying out SAI and away from my comfort zone of Mechs/Robots and Rods. I began creating stuff which I like and constantly work on.
In this age and time, one has to master multiple tools , or that is how I think right now.