Where to get this ignition coil?

Usually I'm working on the old '96 XJ but right now I'm trying to source an ignition coil for a 2002 volvo s80, and I'm not sure if I should trust the ones available at O'Reilly's. This engine has 6 of these things that sit right on top of the spark plugs. Have I heard the ones from NAPA would be more reliable? Or if not where should I get this part?

Check online at RockAuto.com.
They are $24-33 each.

http://www.rockauto.com/en/catalog/...bocharged,1389292,ignition,ignition+coil,7060

i haven't had a issue with autozone brand ones.