FWIW, I have eight LaCie drives (six d2, one Porsche, and one Neil Poulton - all of them 3.5" drives), and the only trouble i've had (apart from confusion caused by the fact that the one Porsche design drive I have needs to be dis-/reconnected after powering down because the bridge isn't switched off by the power switch) is two power supplies dying over the years, both of which were promptly replaced by LaCie.
My d2 drives are rock-solid, as are the dozen or so in use by various colleagues and friends (except for one which a friend managed to fry by connecting the wrong power supply. Oh.).
Oddly, most of the laptop hard drives I've seen die did so without the laptop being dented out of shape.
And honestly, if you're managing to dent the tough drive case, it's kind of silly to expect a mechanical hard drive inside there to take that sort of handling, *regardless* of padding.
Shock-proofing is rubber and physics, not magic.