this is a hard one, but i listed the ones that stand out:

For looks:
Henkei red alert
- Quite possibly the hottest henkei so far that i own. looks absolutely amazing in my display, and will look even better with a new rocket launcher that's coming soon
Henkei Dirge
- Another amazing looking toy, the best of all the exclusives i own. Not only does it represent the G1 dirge well, it also makes it more modern and much better looking

For toyness:
Jetifre
- Great toy to both play with and display, another excellent modernization

For overall awesomeness
Henkei Hound
- Another amazing toy and looks great too