Just refilled my Asvine V200 pens. I go through almost a full fill of #ink in them every 12–13 days. I didn't think I would be filling these #fountainpens as often as I am, but here we are... Guess I just #write that much with them.
Left to right these pens are filled with Diamine Jet Black, Oxford Blue, Aurora Borealis, Writer's Blood and Imperial Purple inks. To their right is the Jinhao x750 filled with Wordsworth & Black Lavender Purple.
The v800 is a Meisterstucke style pen. The reason I don't use it is that the section is 12-13mm in diameter. The v200's section is 10.5-11mm in diameter. I find that anything over 11mm in diameter isn't comfortable for my long writing sessions.
However, I will say, the #8 nib on the v800 is excellent. I have it in Fine, Medium and Broad, and it provides an excellent writing experience. I really like using the broad nib for writing letters - as long as they are only a page long. ;)