500gb external drive with good cooling?

I've heard many stories of external hard drives overheating and failing because the manufacturer failed to put a good cooling system inside the case. Can anyone recommend a 500GB hard drive with an excellent cooling system and good reliability?

It doesn't matter if it's noticeably louder than poorly cooled drives, nor the size of the drive (I basically plan to park it at my desk and keep it there for its lifetime, so portability is not an issue), and it certainly doesn't matter if its read/write speeds are bad -- my computer only has a USB 2.0 port (no high-speed, firewire, or eSATA), so it wouldn't make much difference anyway.

EDIT: I forgot to mention: the drive does not need to come with any special backup software or capabilities, and that it should not be an SSD (too expensive).

Thanks in advance for your help!