I went with the seagate, and mostly because I didn't feel like waiting for the 500GB with 7400RPM and the reviews seem to be more favorable (just slightly). Below is how is all went down after I got the drive
Had some initial problems after installing in the mbp because the Drive wasn't formated (well duh I knew that, but I thought I could do this from the Leopard Boot-up CD).
So I had to take it out, put it in an enclosure , which luckily I had bought (to put the old drive in) and formated from Disk Utility. Then re-inserted back to the mbp and all was well.
the Seagate 7200rpm comes out Jan 24th/25th
Had some initial problems after installing in the mbp because the Drive wasn't formated (well duh I knew that, but I thought I could do this from the Leopard Boot-up CD).
id go with seagate western digital has failed on me twice
from what i know
Hitachi 500GB cannt fit in cause it;s thicker
Samsung SpinPoint 500GB using 3 platter technology, thus a little bit slower and need more power consumption.
so this will let you with 2 option
Seagate 500GB
and
Western Digital 500GB
actually there's one more but it's not available yet
Seagate 7200rpm 500gb HDD.
anyway after thinkin and browsing several reviews site
i decided to get the seagate 500GB and i'm pleased by it
it's silent, ad i've been loyal costumer ffor seagate in the past couple of year.
it runs slightly hotter than my 250 GB seagate though.
but i haighly recommend them.
I put the western digital in my mbp a little while ago, and its work great. Its quiet, and definitely runs cooler than the original 120gb. Definitely a worthwhile upgrade.
I just replaced my HD and bought this one from Newegg:
*Western Digital Scorpio Blue WD5000BEVT 500GB 5400 RPM SATA 3.0Gb/s Notebook Hard Drive - OEM $109.99
I've never had a problem with any WD drives in the past, and this one is no exception to that. It's been performing beautifully since I've installed it, quiet, no heat issues or anything else yet. Only been running for about a month, but so far so good. For the record, I have a MB Pro Santa Rosa 2.2. I also ordered 4 gigs of ram to go with it, got the 2 sticks of 2 gigs for $15.99 each and it's also been working wonderfully.