When Flysky first announced the NB4, I absolutely thought it was an ugly radio and I even thought it wasn't worth it just by looking at the price as no one had it yet to review it but that eventually changed. It's funny because when I now look at traditional radios, I can't believe how huge the battery tray are is compared to the super small profile of the NB4 battery base.

The iT4's look is traditional but I believe 100% that the NB4 is a better radio in every single aspect. While most of the menus are the same like Expo, Dual Rate, etc, the NB4 has more assignable buttons and is more programmable, has built in battery, better screen, more receiver options not to mention the enhanced receivers which people don't seem to understand how programmable those are, faster latency, ambidextrous, built better than the iT4 though still some quirky ones out there, etc.