Rookie, it very well may matter whether it is a joystick or a turret. In my experience dealing with potential buyers and those who have bought either of the scopes, by and large the joystick (aka "thumbstick") is decidedly harder to learn to use, is often disliked, and when it comes to complaints between the two for ergonomics, most complaints are with the joystick. Don't get me wrong. Some people absolutely love them. I can't say I have heard anybody say that about the turrets. The turrets are what people adapt to most readily in my experience...I can teach a person to use the turrets in about 30 seconds and the joystick takes longer because the menu system is more complicated because of the way inputs are made to it. Put another way, until they learn the system, people get lost in the menu using the joystick, but don't seem to do so with the turrets. The turret-based menu system is probably among the easiest to learn of any of the current commercial scopes/
The turrets are no harder to use for a lefty than a righty. The joystick seems to favor lefties.
So, how far do you typically shoot and what are your shortest distances and longest distances that you shoot. Any of the three will likely work for you, the MKIII 60mm be better if you are doing longer distance shooting on a regular basis.