Okay, so you prefer a round, broad nib to a stub. No biggie. You do still have plenty of options.
First, there are a number of vendors selling #6 nibs in varying sizes, which can be easily installed in a number of pens. My knowledge of these is far from exhaustive, but I'll share it anyway.
Nib vendors: Knox, Jowo, Nemosine (available from Goulet and others; IIRC, Nemosine's own site was xfountainpens.com, now birminghampens.com), Fountain Pen Revolution (fprevolutionusa.com).
Pens with easily-swapped #6 nibs: Jinhao X750 (36g), X450 (42g), 159 (50g); Nemosine Singularity (17g), Fission (hefty); Noodler's Ahab, Konrad; FPR Darjeeling.
FPR offers XF, F, M, B, 1.0mm stub, and flex nibs on almost all of their pens except the Muft eyedropper (free with orders > $25 that include another pen), including the $9 Guru. They add $3 for B, stub, and flex.
Though there are several Indian eyedropper pens with easily swapped #6 nibs, I'm going to suggest you avoid eyedroppers in general. Due to the working of Charles' Law, anyone who takes a room-temperature ED in hand to write could see the warmth of their hand causing the air in the large ink chamber expand enough to force ink out of the nib. If you want to try eyedroppers, make sure you warm them up to body temperature while they are point-up, so that the expanding air is what gets forced out of the nib, instead of the ink. Breast pocket carry is ideal for this.
I used to choke up on my pens a lot, and it contributed to writer's cramp. Then I trained myself in arm writing. In arm writing, you do not use any of your muscles below the elbow to manipulate the pen. You teach yourself to write with your shoulder muscles. When teaching yourself to arm write (it took me a few months), start big, perhaps on a chalkboard or white board, and expect your writing to degrade a bit for a while. But now that I have, I can hold any pen in a nearly slack grip, a good ways back from the point (I hold a Parker "51" right on the clutch ring), and my writing is essentially indistinguishable from how it was before (i.e., bad).
Hmmm.... maybe it's time to look at a Lamy 2000 again.
Edited by Arkanabar, 19 December 2017 - 13:42.