IBM/Hitachi drive reliability isn't all that bad IMHO. I used to work for IBM and also have relatives that did so had discounts on their hardware for a long time. Anyway, currently I have a pair of ages old 15krpm IBM SCSI and 3-4 120GB 7.2krpm drives running happily with never the slightest hint of trouble. Had some older ones that are gone due to being too small/slow (although going back far enough many of them are rebadged, so not actually IBM...), not breaking (well except 1).
From after the sell I have dual 7.2krpm Hitachi lappy drives that have been doing awesome. I go through a lot of notebook drives because I'm not very gentle, but these have stood up since they came out (new femtohead is supposed to help shock tolerance, so maybe that's it). If the whole Deathstar incident hadn't happened (I was actually buying Maxtor drives around then, since they were offering 5200rpm models really cheap) I'd say they were one of the more reliable companies and with good performance to boot.
Of course it did happen, heh. So as far as anecdotal evidence goes, I consider them above Maxtor and WD both of who have had more drives die on me proportionally. I suppose I'm biased though as well. ^^ Doesn't Storage Review have a reliability survey or something?
>So think about it - 500Gb for the cost of Hitatchis 400gb...
Heh, you say that now, but I have lots of 40 and 80GB drives laying around that I just can't fit in my computer (and it's a yy cube case so has like 16 bays). Had I bought bigger capacities I'd still be using them. Fewer drives means fewer failures as well, although in this case we have different models and companies being compared as well.