Looking for suggestions: What do you think are the best fountain pens that can hide in plain sight at an office? Something that writes smoothly, but isn't flashy or call too much attention to itself as a fountain pen? Something that doesn't look expensive, but still functions well? Something that looks kind of average? Something that can be used at an open-plan office, then be left in a pen cup on a desk (mixed with other standard issue ballpoints, etc.)? Dark colored, not-blingy bodies would be best for this. Disposables, like the Pilot Varsity, are good office options, but I'd like something refillable. Bonus points for: -Ink window -XF nib Pens that come to mind: Jinhao 991 and 992 Parker Vector Others?