Performance in WinBench 99
First, you can have a look at the data-transfer diagrams of the drives:

Fujitsu MHX2250BT | 
Fujitsu MHY2250BH |

Hitachi HTS542525K9SA00 | 
Samsung HM250JI |

Western Digital WD2500BEVS |
There’s nothing particular exciting about the diagrams. The only notable thing is the data-transfer graph of the Samsung drive: the characteristic jaggies are indicative of two platters with different read speeds.
The data-transfer speeds at the beginning and end of the logical disk are listed in the following diagram, sorted by the speed at the beginning.

First place goes to the Samsung. The HDD from Western Digital is second, the drives from Fujitsu take last places.
The next diagram shows the results of WinBench 99 tests on a 32GB partition sorted by the High-End Disk Winmark results.


The detailed WinBench 99 results are available in the tables below (click to enlarge):

The WD2500BEVS is ahead irrespective of the file system and enjoys a big lead over the second-best HM250JI. The HTS542525K9SA00 is fourth here. We mention the drive that takes fourth place because fifth place usually goes to the MHX2250BT which is hamstringed by its lower spindle rotation speed.