It makes me sad that some people on a niche forum like this resort to name calling on daily basis to lobby their own preferences.
It is going to be your pen, not mine (I lobby for nails and springy nibs), not Bo Bo's, not anyone else's. Yours. If you want a nail or Pelikan 400NN with a manifold nib, you're golden no matter what someone else says. If you want a flex nib, then you're golden too. But if you didn't want a flex nib, but buy one anyway because someone lobbied one to you by flex making everything better, heavenly glory, and rosy pink, you might either only waste your money on something you didn't want, and / or ruin a nib.
Get a dip pen and see yourself if flex does anything to you. You'll even gain right to name call fountain pen users lazy barbarians. Win-win.
Wait. Name calling? Please, dear God, tell me I have not stumbled into another so-called "safe space" where people get offended over innocent things like advocating their preferences. If so, I'm in the wrong place.
I'm new, bought my first pen in late 2016 and only have a couple dozen (most of which are very modestly priced). I don't have many preferences yet because I am ignorant. I I probably couldn't tell the difference between the various grades of nail to semi-flex to flex to maxi whatever flex. I'm trying to figure out the parlance and reading as much of the forums as I can in the time I have. I really don't know for sure what I prefer yet in terms of flex, but I'm trying to figure that out. Am I willing to entertain "lobbyists" who advocate for this or that? Sure. I have nails, they work fine for me. I do not know much about "flex" but am willing to try them out. Lots of people like them, so maybe there's merit there. I won't know until I try. I "think" I want a wet gushy B or BB with iron gall ink for signatures. Only one way to find out, buy one and try it. Or buy three (of varying degrees of "flexiness") and try them. Ask advice from more knowledgeable people to minimize wasting resources. Keep the ones I like, get rid of the ones I don't. No offense intended and none taken. Have fun, spend money, learn something and chat about out. So far, I've really enjoyed this whole FP thing. Until today.
Apparently, today is the day that I learn that things I consider harmless are potentially considered offensive (?) by others. Today is the day I learn that what I considered idle banter is "name calling."
Now my next decision is not what pen/paper/ink/nib to buy. It is whether or not I spend time in a forum where I'll be expected walk on eggshells to avoid "triggering" somebody or contributing to their "sadness"
Back to the main topic: I motion for closure with the great folks who have helped me in this thread. So, thank you all. I really appreciate your help. I have ordered a Platinum 3776 with "C" nib. I'm shopping for a Sailor and also a Pelikan M200 ('80-'90). So, going to buy three pens and keep the one(s) I like. If I'm not banned by then, and if this thread is not locked, I'll share my findings. Once again, thank you guys and gals!