Here is a reviev of prem elements
We've discussed this article pretty thoroughly on the community forum at http://Muvipix.com.
It's actually a pretty absurd review. Putting 120 fps footage into a consumer editing program makes no sense whatsoever!
So it's up to you how seriously you take it. But I've got my review of the new features if you're interested. And it's based on some pretty thorough real world testing.
Or, better yet, I recommend you download the trial and test drive it yourself. Only you can say how well it will work with your unique workflow.