First of all you want a mouth call with a frame that fits your palate well and is comfortable to use.

Keep it simple works for me. I carry only 2 simple easy to use mouth calls. I have friends that could fill a small display rack with all the mouth calls they tote. I just happen to like the mouth calls made by Woodhaven ... one that has a "ghost cut' and the other that is the long standing "v cut" type. These fit my mouth great and with these two, I can do a decent job of recreating realistic sounds of about every type of sound that I have ever heard a hen make.

In my opinion, no matter what type or brand of call one is using, if one can recreate the yelp, the soft clucks and purring of contented feeding of a cruising hen and maybe a cut of an excited hen, then that's plenty enough.