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Of the three, I only have two Lamy pens. Perhaps you should make your poll a bit less exclusive, though: there are other German pen makers.

Pelikan. But from a cost/value standpoint, the Lamy pens cannot be beat! Very different pens, very different users.

I own only a few of them, but like them all. My M800 is superb (not aesthetically, as it is plain black, but it is not ugly either). My Lamy Safari (and others with the same nibs) perform very well... for a price. My Lamy 2000 is great too. My small Montblancs (a cartridge-filler Carrera and a piston filler 134) are fantastic too, each of them in it's own way. My Rotring 600 looks like a hammer, but writes beautifully. My old Tintenkulis hold and feel excellent in your hands, but you have to get used to write with a stylo. My M150 is a great writer, though smallish for my taste it is great all around.

As you see, there are different pens, for different budgets and tastes. All of them are greatly built and finished, and all of them write fantastically.

Just my two cents.

Martin

My Lamy Vista is good but my hands down favorite is my Kaweco Sport Classic demonstrator with an extra fine nib. It goes everywhere with me because it clips, and fits, into my shirt pocket so easily, starts writing right away, and is a pretty smooth writer considering that it is an inexpensive pen.

I think it has to be my Pelikan