If their Alpha isn't out performing the 320, they need to update them... even brand new off the shelf. I promise you it will out do the 320 any day.
I agree 100%, I run both and also run an additional 320 for the other guys I hunt with so I have 3-units on my 4-wheeler at one time. The key is to learn how to use it and use it. What I mean is we utilize the birdseye a lot and I add tracks in basecamp as boundary lines of a property. Works great but you have to pick it up and zoom in and out and if you cannot read it put some glasses on which some people have a problem with, LOL.