What can I look forward to when buying a 2006 4.8is?

[m3brad]

I currently own an Audi Allroad and I'm seriously considering a 2006 4.8is which is CPO'd.

I've had numerous M3's in the past and really enjoyed working on them, especially routine maintenance. My old BMW dealer is pushing me to buy the maintenance program for $2,100. They quote $1,900 for a full brake job (all 4), which I find laughable, after looking at some of the vendors' prices on the forum.

I'd like to know what you all have done regarding your routine care and what other issues I should be looking out for after my purchase?

Thanks for your time and expertise