I'm too old(boring) to be messing about with exhaust upgrades 
....

Do you know how old I am? - I'll let someone else here tell you.
A Milltek exhaust is without doubt the first mod I would do to any new performance car I had, regardless of whether I would continue with other mods or not. Most modern cars are over soundproofed and I consider hearing the engine of
ANY vehicle I drive to be a driving aid, and that's without the consideration of the pure joy of hearing some good exhaust music.
I'm afraid that if you think you are too old, then I feel sorry for you - You are missing out.