I want to buy a Pelikan ( my first) and I do not know what the series M2xx choose.

Currently I've used Lamy Vista F nib. A Lamy Safari's F nib is what Pelikan F too? EF?

What is the difference between series than the appearance? Detail I buy over the Internet.

one of the best basic references sites:

www.richardspens.com

Select: pens and speciaty nibs
Then Pelikan
Scroll to bottom of page for size comparison as well as pics

then consider buying from richard as he can also hook you up with the perfect nib

the guy is a wonderful resource and a gifted nibmeister.

no affiliation! just a long time happy customer and admirer

nibs: steel, steel, 14k

m200 and m215 both steel nib

m250 14k nib

m200 can use m250 nib.

And about the nib? Is the fine ok? I will use in a very absorbent paper.

M200 and M250 both use plastic barrel (different from the celluloid used in more expensive Pelikans0.
Both of the same size. Both use gold trimmings
M200 uses gold plated nib but M250 has 14k nib.

M215 also of same size as 200 or 250 but it has an aluminium barrel. Not sure about the piston material.
It uses a steel nib.
Has silver trimming.

Pelikan F nib writes quite broad.

A customised M215 using a two tone 14k nib like those in the M400 would be nice.

I used to have a Pelikan M215, and I still have a few Lamy Safari with F nibs. If you're accustomed to Lamy Safari F, I'd recommend either Pelikan F or maybe even M in the steel nibs. I like the Lamy Safari F, and my M215 had an F nib and it wrote very well. I eventually switched it for an M nib, and it seemed only slightly bigger than the F if I recall correctly (it has been several years).

The 215 is somewhat heavier in the hand and thus has a better grip or heftiness.

Mike

I don't have an M250 so I can't tell you anything about it. The M200 is a feather-light robust pen. The M215 is the same size, but a fair bit heavier. I don't use mine much because it's too heavy for my taste, but I really do prefer very light pens. The nibs can be a little inconsistent. I have both a F and an M for my M200 and the M actually writes a tiny bit finer than the F. Smooth writers, but I have found the size to be a bit unpredictable.