Tamid, which calls that are currently on the market do you recommend?

The reason for this thread is I'm hunting in an area where I feel the geese are a lot more weary. I use to hunt south of Interstate 80 where the geese responded to even the most basic calls from the cheap 20 dollar single reed calls I have whereas up here it seems to me after 2 years of hunting these geese are very unresponsive.

My perception anyway of this area.