Rotring 900 Stylograph (Fountain Pen Alternative)

I bought a Rotring 900 stylograph a short while ago on classifieds. It came in original factory case with seal as new old stock. And, oh boy, I should have got one so much, much earlier. As far as I know they are no longer manufactured, which really is a shame.
I was writing with fountain pens since my time in school and I thought there was no better writing experience. Using the styloggraph for several weeks now, I am having a really hard time going back to fountain pens. The smooth and effortless writing experience is really something else. Ink is flowing reach and easy and it needs the slightest touch to the paper for starting a line.
See for yourself and, please, leave me a comment if you know of any other manufacturers, past and present, producing stylographs.