1	Western Digital My Book WDH1U5000N 500 GB External USB Hard Drive... 16 MB Buffer Size - Hi Speed USB 2.0 Interface, 480 Mbps Transfer Rate More + Add to Shopzilla List	$80 to $170 Found at 28 stores
2	Seagate Barracuda ST3500320AS 500 GB Internal SATA Hard Drive... 7200 RPM - 32 MB Buffer Size - 3.5 in. Form Factor More + Add to Shopzilla List	$69 to $1,422 Found at 21 stores
3	Seagate Barracuda ST31000340AS 1 TB Internal SATA Hard Drive 7200.11 RPM - Serial ATA/300 - 300 Mbps - 32 MB Cache More Rating: 39 reviews + Add to Shopzilla List	$120 to $2,768 Found at 26 stores
4	Western Digital My Passport Essential WDME3200TN 320GB External... 5400 RPM - Hi Speed USB 2.0 - 2 MB Buffer Size More + Add to Shopzilla List	$103 to $305 Found at 31 stores
5	Western Digital My Book Essential Edition WDH1U10000N 1 TB External... 7200 RPM - USB 2.0 - 480 Mbps - 16 MB Buffer Size More + Add to Shopzilla List	$158 to $330 Found at 35 stores
6	Seagate FreeAgent ST305004FDA1E1-RK 500 GB External USB Hard Drive... 7200 RPM - Hi Speed USB 2.0 Interface, 480 Mbps Transfer Rate More Rating: 1 review + Add to Shopzilla List	$90 to $144 Found at 28 stores
7	Maxtor One Touch 4 Lite STM310005OTA3E1-RK 1 TB External USB Hard... 7200 RPM - 32 MB Buffer More Rating: 1 review + Add to Shopzilla List	$155 to $261 Found at 21 stores
8	HP Personal Media HD5000S 500 GB External USB Hard Drive 7200 RPM - Hi Speed USB 2.0 Interface, 480 Mbps Transfer Rate - Hot Swappable More + Add to Shopzilla List	$109 to $180 Found at 14 stores
9	Western Digital My Passport Essential WDME1600TN 160GB External... 5400 RPM - Hi Speed USB 2.0 - 2 MB Buffer Size More + Add to Shopzilla List	$60 to $105 Found at 28 stores
10	Western Digital My Passport Essential WDME2500TN 250GB External... 5400 RPM - 2 MB Buffer Size - Hi Speed USB 2.0 Interface More + Add to Shopzilla List	$84 to $130 Found at 26 stores
11	Seagate FreeAgent Pro 1 TB External USB/FireWire Hard Drive 7200 RPM - 32 MB Buffer Size - Hi Speed USB 2.0, FireWire 400/800, eSATA Interfaces More + Add to Shopzilla List	$180 to $296 Found at 25 stores
12	SimpleTech SimpleDrive 500 GB External USB Hard Drive 7200 RPM - Hi Speed USB 2.0 Interface, 480 Mbps - 8 MB Cache - PC & Mac More Rating: 1 review + Add to Shopzilla List	$90 to $165 Found at 17 stores
13	Iomega eGo 34267 1 TB External USB Hard Drive Ruby Red 7200 RPM - 8 MB Buffer Size - Hi Speed USB 2.0, 480 Mbps Data Transfer Rate More + Add to Shopzilla List	$150 to $264 Found at 21 stores
14	Maxtor OneTouch 4 Plus 500 GB External USB/Firewire Hard Drive... 7200 RPM - 16 MB Buffer Size - 400~480 Mbps Data Transfer Rate More Rating: 12 reviews + Add to Shopzilla List	$100 to $220 Found at 22 stores
15	Western Digital Caviar WD800BB 80 GB Internal IDE/EIDE Hard Drive... 7200 RPM - 2 MB Buffer Size - Ultra ATA/100 More Rating: 5 reviews + Add to Shopzilla List	$38 to $853 Found at 27 stores
16	Seagate OneTouch 4 320 GB External Hard Drive Interface: USB 2.0 - 7200 RPM More + Add to Shopzilla List	$70 to $123 Found at 21 stores
17	Toshiba HDDR320E03X 320 GB External USB Hard Drive - Black/Grey... Hi Speed USB 2.0 - 8 MB Buffer Size More + Add to Shopzilla List	$118 to $200 Found at 21 stores
18	Western Digital My Book Essential Edition 750 GB External USB... 7200 RPM, 16 MB Buffer - Up to 480 Mbps Data Transfer Rate More + Add to Shopzilla List	$120 to $200 Found at 31 stores
19	Seagate FreeAgent ST310005FDA1E1-RK 1 TB External USB Hard Drive... 7200 RPM - Hi Speed USB 2.0 Interface, 480 Mbps Transfer Rate More + Add to Shopzilla List	$145 to $230 Found at 23 stores
20	Iomega Prestige 500 GB External Hard Drive Interface: USB 2.0 - 8 MB Buffer More + Add to Shopzilla List	$90 to $120 Found at 26 stores