I'm interested in a new duck call. I primarily hunt ponds, but sometimes fields and a few swamps. My budget is $150 and under. I've got an EchoMolded Open Water polycarbonate call, but I'm interested in the Echo Championship Open Water smoke acrylic below:

http://www.cabelas.com/cabelas/en/templates/product/horizontal-item.jsp?_DARGS=/cabelas/en/common/catalog/item-link.jsp_A&_DAV=MainCatcat20712&id=0027809 224462a&navCount=3&podId=0027809&paren tId=cat20823&navAction=push&catalogCode=XF &rid=&parentType=index&indexId=cat2082 3&hasJS=true

Any suggestions on which call to go with, not just Echos, but any good duck call? Thanks for all advice.