On the contrary, the faster 7,200 drives tend to be intended for high end desktop and are better made, we have fewer 7,200 drives returned proportionally than 5,400's.
Samsung tend to be a bit of a budget choice, most are 5,400rpm drives, if you want reliability and not necessarily the fastest speed then I would recommend the Seagate Barracuda series (not the U5 or U6 which are the budget 5,400's from Seagate)
In terms of our returns, these drives are the most reliable when compared to IBM, Maxtor and WD. Martin Replying helps further our knowledge, without comment leaves us wondering.