i've got 3 of the hitachis, built nov'09, purchased in dec'09. i kinda feel more justified about jumping on them when they first showed up after seeing a review of them.
they've consistently been one of the best priced drives on the market from what i've seen, definitely a great value. i dont think i would give mine a 5 for vibration, but the dampened mounts in the mini p180 definitely factor into that... plus ive got em all tuned with aam.
i absolutely love them. definitely very fast for storing large media files, hd video and the like. with my setup theyre spun down and idle unless im watching a movie, or encoding hd content, so its great.
i've actually got them out of my pc right now so i dont have any solid numbers, but in my environment they consistently ran cooler than my other drives (a few older wd and seagate 7k rpm models), and i dont think ive ever seen an error reported through smart data.