I used the alupen which is like a huge heavy crayon, but thats okay because thats all you can really do with capacitive. I tried it on onenote and it was awful. This is actually onenotes fault. It has no smoothing function and its super pixelated writing. Really the issue is the surface needs something similar to penultimate on the ipad. That had different thicknesses, different colors and a quick interface to organize notebooks. If that technology was transfered to onenote, I would be one EXTREMELY happy surface owner, kind of PITA to swap from on program to the other to take notes, and an even bigger PITA to read notes that way. I don't really remember well but I think it felt like I had to use a bit more force on onenote, but then again that could be the program. I did try one program that did smooth the pixels out, but it would only do it after you wrote and not during, so you would see the awful pixely capacitive running, lift the pen, then the text would smooth. Not bad for a first app though, so the technology is there for a penultimate esque program, maybe it exists already? Speak up productivity nerds!
EDIT: ps I don't remember the name of the app, sorry. I deleted it right away. And for a capacitive stylus, if you have bigger hands, the alupen is the way to go, it feels really solid. Good for graphs, organic chemistry equations, sometimes math equations, and that really goes for most capacitive styluses. You won't get any fine writing obviously, that also comes with capacitive styluses. Because of alupens massive head, it picks up pretty easily, and its weight helps with giving enough force on the screen to respond.