Which is safer with Bootcamp?

I've given up using either Parallels or Fusion full time with Windows and I have rebuilt a Bootcamp partition and install.

Both Parallels and Fusion are just way too slow and untrustworthy on my white iMac 2.0GHz with 2G of ram.

However, I would like to hook up by Bootcamp setup via one or the other in OSX, and I'm wondering which of the two would be safer? Not really intereted in speed here, as when I've got substantial work to do in Windows I'll do it in the Bootcamp install.

I've read that Parallels replaces certain Windows files when setup with Bootcamp. Is this true? THis seems like a good reason to go with Fusion.

Posting this note on both msg boards, of course.

Thanks for any help and advice--