I have had a look of the YN-565. It have wireless slave and E-TTL, but don't have HSS
I don't feel like spending another $1200 on extra 580EXII, so would like to have suggestion on 3rd parties speedlite options.
The following is required:
Guide number > 50 (well... or near)
Wireless slave support - (able to wireless master would be bonus)
Most importantly, HSS!