I'm not happy with the volume of mine. I am going to add a external speaker to it soon to help.
its easy to use, download sounds, etc.
Compared to the lucky duck revolt my dad just got, it seems like a childs play toy, but its 1/2 the price of the revolt.
I would probably/will probably, look for a used banshee or something higher end.
if your calling in tighter terrain, or not hugely into calling yet, and just want to try out an e-caller, its great.