Originally got the medium since I can often fit American size medium, but it was too tight in the upper body and especially across my little bit of a gut.
Moved up to a large and found that to be better -- although still a little peaking of my gut when not riding.
Most importantly, it covered me well and felt great on my ride. Did exactly what I expected. I did ride right at the upper extreme of the recommended temp, so it did get a little warm. But I simply unzipped a little and felt better.
And, the padding was nice. It felt like there may actually be more padding in the front, which was kind of nice as too much padding in the back often feels a bit too awkward for me.
There's not much I'd change. Although the black and red, which I prefer the look of could use some of the reflectivity that the orange one has (which is what I had purchased in the medium.