I too own faux fur from all of them including Adrienne Landau (I forgot about her). I recently brought a faux fur hat from Donna Salyers my first purchase because i was looking for a hat large enough to cover my head and ears the quality is very good, I didn't particularly care for the other items she has on Evine.
Like @Trix I too live in a cold weather climate and the shortest coat I wear in the winter covers my knees or is full length. I own a full length faux shearling lined with Tissavel fur from Pam McCoy that I brought many years ago that is warm as toast and beautiful. I am not one to do a whole lot of layering so I want my coats warm straight out the gate.
Depending on your budget, what length you prefer and or need in your area. I haven't brought a coat in years so I'm not sure who is the best now I did purchase a full length Dennis Basso reversible coat with a hood which is a rare length in his QVC collection but I wore it practically all last winter and it was very warm so all that layering was not needed. I do think Pam McCoy leads the pack as far as the best if I had to choose.