Looking to buy an E collars

[caddisman]

I am looking to buy an e collar and I am new to owning a gun dog. So many choices out there right now.
I am thinking that the beeper options is nice to find a dog that is pointing that you may not be able to see.
Most of the place I hunt the visibility is pretty good but I have always been on foot with my partners and we have never had a dog.

I have Wirehaired Pointing Griffon that is 5 months old and strong willed, knows the commands but at times will not come.

Do I really need the most expensive $500 kind? I realize that if the pup is well trained you shouldn't but.

What are hunters using and why?