In watching the reaction of geese to my calls over the last 10-12 years, I've come to the conclusion that high pitched calls, blown with rapid notes tend to be more attractive to geese than low pitched calls, at least in getting their attention. If you want a call to sound "goosey" to you, get a longer, lower pitched call. If you want to get the attention of geese, get a higher pitched call.
I've had a Grounds Guides Best flute, Grounds Half Breed, Grounds Polycarb Supermag, Zink SR-1, Zink PC-1, Winglock Delrin Longneck and the only call of those mentioned which could turn geese effectively was the Guides Best Flute, tuned high and blown fast. To be frank, I didn't use the Half Breed enough to get enough information to form a firm opinion on it, though.
Several years ago, I talked to Mike Stelzner, of C&S Custom Calls about one of his Prophet model calls. It's about the same size as a Supermag, but much easier to blow. It can be adjusted to be low pitched or high pitched. And, I had him tune it very easy to blow, since I had some air capacity issues. That's the way he set it up and I could run it fairly fast, yet it had a tonal range good enough that I could get 6 different pitches of clucks on it. Mike is very helpful in trying to set a call up for you, if you let him know of any particular issues you have. The best way to reach him is by email. I have three of the Prophet models, in hedge, Hawaiian curly Koa and in Bocote. Since my air capacity increased from practicing, recently I changed the call guts over to Edge guts using the wide end of the E4 reed. That gut change made the calls a bit harder to blow, since they require more air volume to run the Edge guts, but the calls are louder and still have a very wide tonal range.
C & S Custom Calls Bocote Prophet
C & S Custom Calls Hawaiian Koa Prophet
As my air capacity increased, I went with his Disciple models. They are a bit trickier to run, as they are shorter calls, requiring more control over your hands in the call operation. They're less forgiving in that regard than the Prophet model. But, they are very fast, require little air to run, though it has to be "popped" into the call at a higher pressure and the geese love that call.
Recently, I ordered Mike's shortest call, the Apostle and I'll attach a link to the thread on it, posted on the main forum sometime back. The thread has some sound files of the call, the Apostle run by a very good caller, who goes by the name, calling4life, on the Refuge.