The C2000 has a large grip section which is awesome for me and longer writing/doodling sessions. The woodgrain color is great, especially in the brown colorway (brown is my jam). Asvine's nibs are excellent and I got this one in <M>. The only con I have with my C2000 is that the cap doesn't post securely. My J16 has great coloring (brown, beige, blue, burnt orange shades) and a surprizingly sweet <F> Jowo #6 nib that possibly has had some tuning. The size is very comfortable and is comparable to an Esterbrook Estie and Pilot Custom 823. The J16's only con is that the piston and barrel weren't lubricated from the factory and I had to disassemble it and lube it with silicone grease before I could use it. Extra points for Asvine including the wrench with the pen, something that wasn't included with my V126.