wondering how difficult the job is, and what tools I need? also, i bought the car with 105k miles and I have 108k now. Should I replace the rotors too?

i'm sticking with OEM parts, but drivewire dot com lists several choices on the pads, PBR, Jurid, Genuine, etc etc? rotors = brembo, balo, zimmerman, ..??? do i also need brake pad sensors and pins?

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Current cars:
2001 MB E55 AMG
2003 Honda S2000
2000 Honda CRV

Gone but not forgotten:
2004 BMW 325i 5sp sport
1999 BMW 540i sport
1997 MB E420
1995 BMW M3 coupe