I would purchase Michelin MXV4 Plus tires. I don't think it matters whether they're H or V rated.
All MB dealers and many tire shops use the hunter gsp9700 balance machine.
It is just as effective in balancing tires as well as other machines, but is particularly useful when you have a tire that has wheel force variation issues and becomes problematic for a normal wheel balancing machine to handle.
Wheel force variation describes the situation of the sidewall of a tire that has too much variation between the soft spots and hard spots. All tires have hard spots and soft spots, but if the variation is too great, then a wobble develops at speed.
Go to the website to see a great video demonstration of this.