Kaweco Original 250 Vs Dia2

[Lugworm]

The Kaweco Sport I found to be too small to be comfortable, so a bigger Kaweco was more appealing.  

I've been sort of fancying the Dia2.  Then along came the Original 250.  Both pens have a classic look to them which I find appealing. 

Which is the better one?  Is one more comfortable for bigger hands than the other?  I saw in one review that the Original 250 has an o-ring which seems to make a nuisance of itself.

Decisions, decisions.  I probably won't get either in the end.   But I would like to know people's thoughts on either pen.

Thanks

[AlexLeGrande]

I have the Dia2 with a Pendleton Brown Butterline Stub that he ground sharply italic for me.  This is a beautifully classic pen that fits my hand well and has great italic line variation.  I keep it inked and in rotation.  I love this pen!

[Azulado]

I have DIA2. I think it is a perfect pen, I can't find any fault with it. It is definitely worth the price. I think for size, it fits both large and small hands. Kaweco nibs are always a guarantee. In the worst case, they may require a very simple adjustment. All my Kaweco's write excellently. I also find them to be extremely solid. 
The Original 250 seems like an excellent pen. Its weight is similar to the DIA2, but the diameter of the Original is larger. If you have large hands and dislike slim pens (the DIA2 is not exactly a slim), this may be a deciding factor. 
Where I see differences is in the texture, the matte metal is very different from the shiny resin. On the other hand, the design also marks differences, one is classic and elegant, the other, more modern: although the Original has lines inspired by old models, the metal brings it closer to the present. 
To conclude, I think the Kaweco DIA2 is at a higher level than its price might lead you to believe. If it were equipped with a gold nib and piston, its price would be well over 300 €, but, for marketing reasons, the brand only timidly dares to compete with luxury brands through limited special editions (the DIA2 amber is beautiful).  Although it is certainly a great pen, I see the Original a step below. Of course, this is very subjective.