Comment more info. (Score 1) 125
more info on hardware based encryption...
http://www.scmagazineus.com/Crypto-chip-How-the-TPM-bolsters-enterprise-security/article/111865/
IMO best choice FDE drive, they come from Seagate, fujitsu and hitachi. Seagate has best "out of box" solution. FDE is faster, cheaper, easiest to use, easiest to manage.
http://www.seagate.com/www/en-us/products/laptops/momentus/momentus_5400_fde.2/
(Since your not managing large numbers you don't need the servers...if you did manage 10-100,000, the servers would be a must, and well worth it)
Dell and Lenovo now sell laptops with the choice of FDE drives.
check out vendor www.wave.com, awesome customer service (these guys know what they're doing)