I also use a Kimborough medium sized servo saver
I have been liking the C/F short arms lately all round, might try mediums rear sometime though.
Regarding breakages the car is the strongest car I have ever owned. I replace front driveshaft blades quite alot, the CF arms are the weakest but I have only damaged them on the rear if you get hit from behind or something. Like all cars the hingepins can break if you hit something in the wrong way.
I am very happy with the car and is the best car I have ever had, What makes it better is the support from other drivers and Schumacher themselves if you ever need help with your kit.
Good luck with whatever kit you choose