Enterprise Full Disk Encryption

[xgermx at gmail.com (xgermx)]

I'm getting bids from HP and Dell on laptops (about 100). Does anyone
have experience with their respective full disk encryption solutions?
The reps I've talked too (from both companies) can't really give me
the technical information that I want, and the information on both
websites is outdated (2007).
I've also considered going with TrueCrypt (I have the most experience
with this and it's free, but there's not a good way to centrally
manage it).
Your thoughts?