Singletrackmind

Hello, as you are an owner of a yt decoy Enduro maybe you can help me, I have a problem choosing the size between M or L, I am 172cms and short legs, I want an agile bike and do manuals easy cause I love technical uphill trails. I had a levo 2017 in medium size but i feel It good but maybe a little short. What do you think, are yt frames little or normal? Thanks