I need to upgrade the hard drive on my current laptop (apparently 50GB won't cut it for photography, who knew :wink and have found a few options. Seagate offers a 7200rpm 2.5" hard drive that looks like a great deal (230GB/16MB Buffer for $90) but will a 7200 be too inefficient for a laptop? Has anybody upgraded and seen a noticeable degradation in battery life? Does anybody have a recommendation for a good (reliable, fast, 250GB+) hard drive? Thanks in advance guys and girls.