I do have a Rotring pen that I found. It's built like a tank and I love the ergonomics of it, but I usually leave it at my desk because of the weight and I don't want to be the second one to lose it. I have been using my Rotring Tikky a lot lately.
For metal body pens I've been using a few Zebra Kado. I got the first one because it looked like a standard yellow number 2 pencil. Someone was flicking the clip and broke it off, so they guy be a new yellow one and a blue one for breaking it, and I use all 3 now.
When my gf went back to college I got her a Pilot Delguard pencil. She writes pretty heavy handed and it has a mechanism to prevent breakage from pressing too hard. She really enjoys it. I don't do much physical paperwork anymore now that I'm remote, but if I wanted a pencil, is probably get one of the ones that rotates the lead as you write to keep an even line.
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It's a server side problem, not me, so I reposted from an alt.