Reddit mentions of Copic Marker Gasenfude Nylon Brush Pen

It really depends on your budget, what were you thinking? Obviously there's a lot of directions to go in. Whatever path you take, I also recommend getting better pencils and paper from an art supply store. It's important to do digital and physical. Both skills will always be handy for an artist. I'm using a Surface Pro 4 great for what you mentioned, and it's mind blowing. The Surface Pro series is going to be a bit more economical compared to the Wacom stuff. The reason to go more Wacom/Surface Pro is the same others have already mentioned. Pressure sensitivity! It can detect more, and get more detail. There are two kinds of digital drawing. Drawing directly on the screen (preferred, you can see what you're doing) or drawing off screen on a sensor pad, that's attached through a USB chord (cheaper). With the Surface Pro you can draw directly on the screen. For programs I'd recommend Photoshop or Clip Studio if you want something a little cheaper that's arguable to be just as good if not better to inking Manga and Comics. Another reason to avoid Ipads and Phones, etc. is that they don't have the software to run normal computer programs, they run slimmed down versions which only give you a little not a lot. That's a bit of my take on the computer stuff. If you're curious for physical stuff at all, I'm using a brush pen from Pentel and another from Copic which would be good for anime/manga art as you mentioned. Right now I'm also drawing some comics physically with it, and it's doing the job of like 10-20 pens I would normally use. Plus they are both refillable. Inking lets you get crisp lines and you can erase the pencils away afterwards. Here's the paper I'm using, which already comes with light blue guide lines printed on it (the lines are the standard comic formatting for American Comics). They are easy to get rid of while scanning.