This is a must.
So ya'll know my HDD busted a while back, I tried everything except a new cable so I brought one the other day and its brilliant (plus my pc works again due to the old cable was broken inside).
old one is a plain cable no right angles or clips it was never rested comfortably in its socket, new cable it has a right angle for the motherboard mount and it has a clip to hold it comfotably on the hard drive.
For me always fiddling around in the case when its on this is a life saver the old cable used to fall out a lot this one is much more secure

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its a couple of quid and personally I think its worth it, mainly because I can use my PC again but it really is a simple upgrade.