These lights are really good. In combination with D-Fuse softboxes they are great for interviews, YouTube videos etc. Very bright, even with softboxes. I thought about the 660 but decided to save a little. I don't regret this decision. I was able to fine-tune the color temperature and brightness to match the lighting in the room. Application management is fine. I love the tint feature to add color to shots when needed. The construction is solid. I have a feeling they will hold up to everyday use. The controls don't feel cheap. A counter had a broken stop upon arrival. Annoying, does not affect performance. Neewer customer service sent a replacement with no questions asked. Excellent customer service. I appreciate the addition of a tote bag. Everything is closed. Could use a little more space. The bag is the only item that appears to be slightly inferior. Would definitely buy them again.