Best digital graphics / sketching software?

Best software for digital paintings / graphics? Before I start explaining about the software or recommend some, I would like to share that my hobbie is painting and drawing. When I was a kid I usually used to draw and paint on paper . But by using graphics tablet or a normal touchscreen tablet I can practice a lot more without wasting a single sheet of paper. So now I'm going to recommend top 5 apps which I personally have tried and I like them. 😀 1.Ink scape 2.Adobe illustrator 3.concept 4.graphiter 5.Autodesk sketchbook