If your thinking the COD, I assume your hunting Canadas then. Lots of money does not always equal the best call for "you". From what I have seen hunting with other people, goose calling styles vary way more than duck calling. I recommend visiting a Cabelas, Bass Pro, etc. where there are lots of calls you can hands on try out. There are some high end calls that just did not sing to me when I tried them or do not fit my calling style.
What I use is a Patriot, http://www.cuttdowncalls.com/goose-calls.htm
and happy enough with it, that one would be hard pressed to talk me into changing. I can make that call sound like a lot of geese at once, though I could see myself using a Tim Grounds for a little different sound or as my backup.
I used the Poly "Loudmouth" for a long time with great success, then went to their Patriot in Texas Bo Darc & Acrylic. Only I found the wood call was cut straight bore with a sharp edge on the inside the mouth that was uncomfortable. I dremeled it till it had the same bore and shape as my old Loudmouth to get the sound I wanted. Extremely happy with it now, but I would buy the poly or Acrylic and stay away from the wood one if someone were interested in that call.
From picking them up and trying them, if I just wanted to have a more expensive call around my neck, I would buy one of the high end Tim Grounds short reeds. Personally the Zincs calls I tried do not sing to me, but it could just be the particular calls I picked up had been messed with or tuned wrong. My old backups and guest calls that I can make sound good without a lot of effort are inexpensive Quackhead and Gardner Honker calls.
I also use an old Lohman Goose Flute that has changeable rings to tune the back pressure that I really like, but it is mostly my resident Canada calls for it's deep herronk sound. The current Lohman Big River flute makes a good old school magnum goose sound as well IMHO. And my current guest call is a Tim Grounds Old School, but it is a one trick pony resonant cavity type calls that makes a honk that even a first time hunter could use.