Vinz I have the canon 430 ex2 works a treat for fill flash and hss, the youngu flashes are good for the money I have a few but if I'm on a paid shoot I use the canon flashes as I know they are reliable and constant.
Saying that I've never had a problem with the youngu flashes, but I wouldn't depend on them for a pro shoot.
i have a 430EX ii. i know it has HSS but off camera i can only go 1/250 as far as i remember. I can try again. Also with my 430 ex ii when i go manual mode, it will go ettl after awhile. I don't know if there's something wrong.
Let me give him a chance again. will try now.