I don't have a 200. I have a '90's M400 (springy semi-vintage regular flex), a 500 (fancied up '51-54 400) flexi OBB, a 400N semi-flex B, all those in tortoise and green striped 'flexi'/maxi-semi-flex OF 400NN.
Yes, I can recommend those pens ahead of the 200.
I've had six 200 nibs go through my hands, trans-mailing them. Two were as good as my 120 nib a joy to write with vintage springy regular flex....that for a few years I thought equal to my '90's M400. Eventually I pressed my M400 to see if it was as springy as my two Celebry nibs, one in gold, one in steel; both equal. I had rated them as hard semi-flex, They weren't they were true regular flex. The M400 was the same.
4 of the 200 nibs including the nib on a 215....matched them.
Those are dammed good nibs.
I hold the 200's nib to be better than the 400's....unless all you want is butter smooth from a modern semi-nail 400/600.
If you have a modern post '97 400, you might want to try a 200 nib on it. At @ $25, you can not go wrong and get a taste of what a good nib is.
German vintage '50-70 semi-flex stubs and those in oblique give the real thing in On Demand line variation. Modern Oblique is a waste of money for a shadow of line variation. Being too lazy to Hunt for affordable vintage oblique pens, lets you 'hunt' for line variation instead of having it.
www.nibs.com/blog/nibster-writes/nibs-germany & https://www.peter-bo...cts/nib-systems,
The cheapest lessons are from those who learned expensive lessons. Ignorance is best for learning expensive lessons.