It shares many of the same features, but at a lower price point
As mentioned, the back panel is adjustable and can be changed from the Small setting through Medium to Large, according to the users requirements
I would warn riders looking for a lightweight e-bike, as the Marlin+ is certainly not that, but what it lacks on the scales it more than makes up for everywhere else
That said, the Messenger is intended more for remote frontcountry use: The flat shape will be more at home on the dash of a vehicle or boat than hanging from a backpack, and the tiny screen wont be an issue when you have your smartphone charged and ready to go (you can type on the Messenger, but the screen is minuscule)
This deeper bend translates to more feel at close range, and it makes small fish feel bigger, but these rods can feel a bit noodly and they require a slower casting tempo
The Mullets have the perfect action as well for cold water not too aggressive