I'd say Ammit and nano are both really nice. Ammit advantage is the slimmer profile if you want something for the Pico or for a clean fit on a tube mech. Nano is just plain beautiful to build for, and the 50% greater eliquid capacity is nice for me. I find flavor on both excellent. Maybe I'm just lucky but my very first 0.45 ohm twisted 26 kanthal coil, rayon wicked, tastes great in the nano.