I am really enjoying the TWSBI Micarta 2 that I bought with a fine nib. I don't usually buy fine nibs but after having medium nibs in all my other TWSBI pens, I decided to shake things up a bit. The first ink that went into this pen was Pelikan Brilliant Brown. I bought the ink to match the pen and I was really lucky to have found an ink that works perfectly with this pen. When the Brilliant Brown ran out, I filled the pen with Edelstein Amber. Now the pen writes poorly. The ink just does not suit the pen and it is no longer a pleasure to use. If I wasn't traveling and way from my ink stash I would probably empty the pen and refill it with something else. So, my question is...other than the Brilliant Brown that is absolutely fabulous in this pen...what other ink has worked for you? I really want to know!