Hi Legopammy,
Welcome to Jayco Owner's Forum. There are loads of hitches and opinions about which is 'best'. There are however, only a few things to consider.
First, understand your 5er's width is likely 8 feet... that means your camper will pivot at the 4 foot point. Measure from your back window 4 feet... if your camper pivots at that spot, you'll need to be very careful when you make a sharp turn or backing up with the camper at an angle.
An example, my truck bed is 6'8" and I made a sharp turn backing up to turn completely around in my driveway... I smashed the corner of my truck. Ouch... couple thousand dollars later it looks great again. I may never have needed that angle while camping, but I didn't want to risk ever doing that again so I got a
SuperGlide hitch.
Now when I turn the wheel, the pivot point automatically moves back from the cab. I can make huge angle turns without worry.
Bottom line, if you'll okay with making regular angle turns and have a partner who can stand alongside the side of the truck to wach when you make these sharper angles.. nothing to worry about.
So even if your 5er twists on it's own or twists using a regular hitch, you have only the space from your pivot to your window to contain half the width of your camper - before you hit your truck... unless it moves back when you turn (i.e. SuperGlide).
Trucks with 8 foot beds have their hitch much further back. Short bed trucks need to be more careful...
any hitch will probably work if you are not turning a sharp angle.. but getting into some campsites may not be possible.
Summary: Your dealer may know best so before you drive away with it, ask them to
show you how far left, or right, you can turn your truck in their lot. If you're okay with that then you're okay to pay them. Have a good time and enjoy the camping fun.