I think it depends on how you are going to use the collar- if it was something you were planning to leave on a lot, even when unsupervised I would probably go with a breakaway. I just use regular thin collars because I only ever have them on the dogs when I am around.
I like boomerang ID tags
Boomerang Pet Tags: Guaranteed to last. Mailed today, Free Shipping. They aren't fancy- but they are reasonable, amazing quality, fit a lot of writing on them and are guaranteed for life.