Not sure if it helps but......
I'm 5'6, 125 pounds, and was riding 153cm invader minis at the begining of the year. They broke, and I had a real tough time deciding between 161 and 171 anthems. I was scared the 171 would be way to heavy to spin and stuff, but eventually decided it was the right choice. After center mounting them, I can't beleive I even considered going any shorter. They feel perfect, and everything's more stable. Spinning isn't any hard either for me. The extra weight and length makes it a little harder to wip them around really quick off little bumbps, but the momentum makes up for it when you spin off anything more than 5ft.