Describe your application you are looking for a mid layer in...stationary hunting, active hunting, hiking mild trails, etc....
the answers will vary with your answers.
Last year I really found my strong fleece 260 was a great mid layer for stationary hunting, but would not want that on an active hunt unless it was really cold and even then not sure.
i don’t do a lot of active hunting, so can’t comment too much on that, but I have a few options that might suit the bill for that when the time comes, promerino and core lightweight come to the top of my head.