Once you have an idea of the styles of art you like then it is time to pick what to do with it.
For example if you prefer color tattoos to black and grey. Or if you want a deeply rich and detailed masterpiece that requires multiple layered effects or more of a simple and expedient tattoo of a more standard style and set of effects.
Both applications can have their benefits and drawbacks so it is most important to think of what is going to best for you in the bigger picture. There is no "right" choice, only what you prefer.