Saw this thread show up on Google and had to add my 2 cents. I think this is an awesome unit. You've got 2 GB of storage for ~1000 calls. It comes with a bunch of call sequences by Randy Anderson, it's got folding legs that actually protect the speakers (smart design), and the remote works at >200 yards.
Really easy to carry versus some other units that are pretty darn clunky. It's also loud enough to call coyotes from long distance in pretty bad wind. I own quite a few electronic calls but I think this is one of the best.
Primos Alpha Dogg Review