I have a 550 pro plus and I can use it without looking like a video game controller. I rarely interact with the dog through it while hunting. Mine will push out to several hundreds yards lately with the roosters running.
Training I can focus on the dog and connect with her instantly through what we of the few buttons is appropriate.
I get point notifications quickly and can feel them most of the time through the unit clipped on my belt, they transfer through to my 7pro watch within a few seconds. I use a high plains gear holster that stays horizontal so I can glance down at the screen easily. I never hold onto the controller.
I believe the direction arrow on the handheld isn't terribly precise for where I wear mine, but have never calibrated it.
The direction arrow on the watch is good. However, long sleeves cover it up easily, so it's main use is for point vibration. Short sleeves it is easy.
A friend has the alpha300 and ended up buying a pro550plus controller also. He carries both while hunting because he likes seeing where the dog has gone on a map.
I don't mind the double dog display on the watch, we actually get notifications from each others dogs when we aren't hunting together which is neat.
I think a lot of guys like the Instinct3 as the bare bones dog track watch.
I'd do the same thing if I started over. 550 pro plus, and a watch.