I bought my dad the Goozilla from quackhead. It works ok. Pretty darn good for $20! But it does not break over into clucks nearly as easy as my Bill Saunders "Red Zone".. CGguy, I would not step down from what you have.
www.billsaunderscalls.com
Check out this link and look at his calls. Listen to his sound clips, if you can find a $20 call or a flute that sounds more goosy then that, well, I'll kiss your A**!