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.
They're not bad! You'll play a little bit of nib roulette and the vac-fillers used to occasionally have some issues where they needed the seal trimmed due to mold flash, but I haven't seen anyone complaining about it in the last year or so. Cracks less than TWSBI (tbf they've fixed that issue but the meme lives on), fit isn't perfect but there's not slop or anything. You could do wayyy worse for a vacfiller. I much prefer Nahvalur's nibs, but that's probably down to personal preference.