Pros : fast, easy, no mess, you can choose to affix the came as you go or all at the end once your product it put together, no special equipment required except for an inexpensive heat gun.
Cons : none
Other Thoughts : I have been doing stained glass for several years and tried No Days Glaze for the first time last week. This product is great! It worked perfectly the first time I tried it. It's fast, easy and no mess what so ever as in the cement/whiting method . I'm not sure what the other reviewer was referring to about the glue showing. I had no problem at all with it oozing. As I mentioned earlier, it worked perfectly the very first time I tried it. I absolutely love this product! I will never go back to using cement/whiting.