I prefer Weldbond glue over thinset, but I'm mostly using thinset because of the way I am positioning the glass. I need to adhere the glass to the thinset while the thinset is still workable, so I'm doing quite a bit of pre-cutting. I'm already making a mess with the minimal amount of progress I've made so far. I know I'll regret this mess when I have to resort to a dental pick to clean it up later. Oh, well.
Here is a look at the yummy glass I plan to use: