Good Flash at a great price.I use two off camera with and w/o umbrellas or softbox. Works great when paired with the Yongnuo RF-603 N3 triggers on my Nikon D5100.I use 2 RF-603 transceivers. Place one on the camera, one on a 560 set in M mode and the other 560 in S1 mode. You must make sure the slave widow on the flash can see the command flash of the other.Solid enough build quality, feels sturdy. If an all manual flash is what you want then get this!You may want to checkout the other Yongnuo versions before you decide.The YN-560 III, has built in wireless receiver, so if your camera sends wireless you might go this route. If not, you'll still need a trigger or use as slaves.The YN-565 and YN-568 are I-TTL/E-TTL models. 

Question: How is the build quality?
Answer: Solid enough build quality