Noodler's Black is trouble-free, in my experience (at least several years).
I use Platinum Carbon Black, but it does leave a residue, so I use this ink in pens with easily-removable nibs or nib sections that can withstand ultrasonic cleaning. (I *think* that Nakaya's nib sections will fare fine in ultrasonic cleanings, but I don't feel comfortable taking that chance. Therefore, I'm using PCB in a Pilot CH912 (PO). I've using this combo for four or five months now, and I've rinsed the nib section out once or twice. Haven't used the ultrasonic cleaner yet.)
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