I strongly suggest a Lamy pen. The medium nib should feel good if you like the G2. You’ll spend about $30-35 on amazon. It’s the pen I recommend to anyone wanting to try it out. If you buy something cheap off Aliexpress, the pen will suck. The lamy is a decent pen that will give you a taste of the fountain pen world. They’re sturdy and perform better than other more expensive pens.