Anyone have a favourite between the WM Megalite and the FF Kestrel ? What are the advantages or disadvantages of one over the other?

The major differences as I see it is the collar and the outer shell, the Kestrel being 4 oz heavier (long) with about 2 oz more fill, ........ anything else that I'm missing?

Although the sizing is quite similar, is this really the case? Does anyone have experience to say that this is definitively the case? I'm familiar with the WM sizing and would surely like to know if the FF is in fact similar.

Thanks for input.