I'm in Broward county that is using the Go Math series this year for the first time. I must say I'm not impressed at all. Granted it has only been 2 weeks of school. My DD in 4th is using it and I don't see any new concepts being introduced that were not in the series she used last year in 3rd grade for almost 1/2 the book. The vocabulary has changed quite a bit and the methods they want the kids to learn how to do the problems, but for children who are either advanced in math or further along in their elementary years I can't say I'm very excited about it.
