Tokmas CID9N65E3 rocks!
It is CRAZY how efficient this GaN FET is in TO-252 (DPAK) package. It generates 5W @ 28 MHz with 13.8V at drain without even warming up!
Datasheet excerpt:
The full datasheet is available here.
Here is the 3D render for a PCB I made for testing this part:
The PCB design is available @ https://github.com/kholia/HF-PA-v10/tree/master/GSD-Hacks-v4-SMD (non-commerical use only).