Lets see your big hitters, I'll start proceedings with my Hitachi HDT7210, I've got two of this model and both run flawlessly. Program used Hard Disk Sentinel - http://www.hdsentinel.com/download.php
=== START OF READ SMART DATA SECTION ===
SMART Extended Self-test Log Version: 1 (1 sectors)
Num Test_Description Status Remaining LifeTime(hours) LBA
_of_first_error
# 1 Extended offline Completed without error 00% 7822 -