Maintenance Items: OEM or Aftermarket?

[WRXtranceformed]

I'm going to give Irontoad a try when they get back to me on some parts pricing. After making some calls, they seem to be about a third cheaper on a lot of parts than going through Leesburg Toyota. From the research I did, for Lexus parts anyhow, you can get most of the stuff cheaper from a Toyota dealer than you can through a Lexus dealer. And they're the exact same parts in many cases. The water pump is a Lexus only part though, so I'd have to go through Irontoad or a Lexus dealer regardless. Just a though for any of you Lexus guys. Here's a pretty good spreadsheet that some guy on the IS300 forums put together of OEM IS parts you can get through your Toyota dealer (without that Lexus markup).