...after 11 months - maybe about 8k clicks. I wrote a review where I downgraded it. When it worked it was pretty nice, and the physical build was very good for $150.
But! Right now the price of a 430ex II is down, and it's
not a whole lot more right now at $254 . Additionally, as mentioned here - it's got HSS, the yongnuo did not. additionally, the GN is not a
whole lot lower than the YN-565:
http://speedlights.net/yn565 vs. 430ex II The Yongnuo had goodies like more manual settings, PC and battery port, ready signal etc.
I really got it for off flash use with a trigger, and liked it so much it became my on-camera flash. After a year at $150 would be akin to a $600 canon failing after 4 years and 32k flashes. Not bad, but not good either. Especially considering it was never overheated or abused.
In theory, they've addressed one problem with the unit 5/15/12, but I don't think it's the same reason mine failed.
And, the Yongnuo was fully functional through my menus on a 60D.
For a first (and only) flash, I'd highly recommend the 430ex II.
2 others to look at would be the Metz 50 AF-1 or Nissin Di622
- however those are both the same cost as the 430ex II at its rebate price right now - which ends 2/2/13!
Each of these have their pros and cons from each other, use the same comparison tool at speedlights.net above!
BTW, I picked up a 600ex for about $440, I'm just angst about returning it for an RT at $120 more (soon to be $180). I'm just not sure I'll ever be taking advantage of multiple speedlites like that!