Have to disagree with the Sean Mann call. I have one and it takes a train load of air to run.
I've got one....I like it just fine...then again it's not like I spend afternoons testing various calls much less using them in the field. I've run a few others just messing around but could not even tell you the brands. So bottom line I don't have a very good base to give recommendations.
But yeah it's the Sean Mann White Out Express. They have a regular White Out call that is more expensive but the express is like $49.99 or some such.
But curious what you recommend Wayne.