Wheel alignment.

My car happens to be:  2010.5 model year 3.0ltr. XF-S prem. lux.

However my real interest is how closely members like their wheel alignment to be set to the mid point of the range. I've so far always used  the Hunter system where they use the four wheel set up with a reflector on each wheel. Thinking about past visits the operator has always set the front and rear toe to the centre but  I began to wonder if other Jaguar owners liked the castor and camber settings also to be brought into the centre point rather than leaving them in the margins even if still in the green and probably deemed ok. The thoughts and actions of others would be appreciated especially if there advantages to be had.

Thanking you for your interest.

Roger.