How to maintain an e70 4.8l for a less painful experience?

[e70jane]

As you probably see already, I'm currently going through some can fault readings, over 30 fault codes, which I'm still trying to solve. While searching for solutions I also come across nothing but major problems associated with this particular model. Though I have to admit, when it's normal, I love the way it drives. My 07 4.8 has 50k miles and I really want to keep the beast, but other than getting rid of it, how do you make it a less painful experience to own one? Anybody in this forum have been lucky enough to not have to spend an arm and a leg each time?