Gamer edition hard drive?
Sheesh, do we need more proof that "gamer"="sucker" in market speak?
Re: hard drive speed
Seek times can be shortened by RAID1, just as pcchen said. Another, cheaper way to go is simply to partition the drive. It doesn't affect the rotational latency, but it does shorten the stroke and thus lowers total average seek time quite effectively. In fact the fastest 3.5 inch drives use smaller than standard platters, 2.8-3 inches. (Earlier Raptors as well unless I misremember.)
Average transfer rates are more effectively inreased by striping, for large files. It's a whole lot cheaper for gaming purposes, and is likely to be just as well performing, or possibly (probably) better.
Overall, I question the need. As far as I know the only point where a game accesses the drives is at start and at level loads, and it would seem that level load times are mostly dominated by setup, i.e. host performance, not drive performance.
In actual gameplay the drive isn't accessed, and thus its performance is completely irrelevant.
How to get a consumer to buy a $300 150GB drive rather than a $100 250GB drive with a few ms slower access times, and 20 % lower transfer rate?
Slap Gamer on it!
Christ.
