I am getting a new laptop (Lenovo T450s) and plan to upgrade the storage right away. I choose HDD because the cost is still much lower than SSD. Here's my criteria in descending order of importance:
I am looking at 1TB range. I am going to stick with HGST or WD because of past not-so-good experiences with Seagate. No real failure, but the drives sounded scary.
On the reliability front, can anyone comment on HDD speed and temperature? I have been using 5400RPM drives on laptops because I have bad experience with a 7200RPM drive. I am afraid when operating that hot all the time, the drive would fail too soon. The 7200RPM WD Scorpio drive was mounted on Dell Inspiron 600m, the left palm side was unpleasantly hot; sorry, don't have temp reading (it feels well above 40 deg C). In contrast, my 5400RPM HGST drive was running at 37 deg C on a Lenovo T400.
Another question--I see the 5400RPM drives tend to have 8MB cache only, while the 7200RPM has 16 or 32MB. Why is this?