I got it mainly because of the looks (most fountain pens tend to lean towards the ornate, if you get what I mean, while this one was exactly the kind of design I loved in matte black, exactly the color I wanted), the weight (since I have tremors, heavier pens help with writing) and the price (less than $100).
Since what everyone will be looking for in a pen will be different, maybe you could look online...but if there's a store near you that sells lots of different types of fountain pens, I really suggest going in person to try out a few, and to talk about what kind of pen you had in mind.
When I went to Flax (a local store in los angeles) I went there with a couple different pens I saw online in mind, but trying them out in person, I wasn't satisfied. I spent a while talking to the guy helping me, really stressing the weight and price point as being my main criteria for selecting one, and he pointed out this little beauty I didn't even know existed.
I like the G2s, I even still have one around for when the fountain pen would be inappropriate to pull out (one being my favorite color was green, so I got a dark green ink for it that I usually use over black), but this makes writing fun again :)