Looking for an upgrade to my TWSBI Eco!

Hey everyone, a few months ago I picked up my first fountain pen, a TWSBI Eco Medium, and a variety of inks to go with it. My favorite ink at the moment is Noodler’s Baystate Concord Grape; I love purple inks and of the few that I’ve tried, this has been my favorite.

My problem is that the acrylic on the Eco keeps cracking around the feed, so I’m looking for a more durable/premium pen that can hold up to whatever is in Noodler’s ink that might be eating the acrylic.

Not too worried about cost, especially if the pen comes highly regarded/recommended!