Well, if we're only talking 0.5 sec extra (or thereabouts) I'm not going to get hung up about that. I just wasn't clear how much slower these drives tend to be than faster ones.
Like nzdcoy, I normally just boot my HTPC when I get up and I'm making a cup of coffee. I tend to leave it in standby a lot of the time anyway, so it doesn't even have to do a full boot that often.
It can be a pain with only one drive when editing a recording and saving the edit to the same drive (or compressing a programme), but that's going to be the case whichever drive I get and I can always plug in my e-SATA drive when doing that for now (until I can get a SSD).
So cheers for the help, I'm happy to get the WD now, knowing that I'll be getting a really quiet drive that will suit my purposes just fine
^^ Just sat down now, with the room quiet and booted the PC.
you can hear some seek noise at boot, but it is in a pretty cheap external enclosure ~50cm away from me with no dampening or vibration reduction or whatnot, pretty sure if it was in a case of almost any kind it would be virtually inaudible.
I have never noticed after the PSU fan revs up after it gets warm in there- its the PSU from an antec ISK310-150 if that helps