Watercolor or water based brush pens are the most suitable one for you if you don’t prefer using a lot of water while painting or if you don’t have that much water available at that particular time.
Their blending characteristic and rate is definitely going to make you a fan of this tool. These are used for doing aesthetic art works, calligraphy, making Polaroid-like minimal artworks etc.
Keep one thing in mind, and that is; not every canvas is going to support this type of brush pen.
If you like the results of water based brush paints, then I would suggest you to just buy a high quality watercolor canvas so that your struggle is not wasted by the colors getting absorbed or being spread over the surface (making it difficult to blend it properly).
So, if you’re using water color brush pens, then these pens need a water-based ink in them. Along with that, put a small bowl or container filled with some water beside you as it will require some water to make the colors look best.