Hello MacDV friends, I'm looking at large external devices for editing movies from and storing large image files. How critical is rotation speed. LaCie always seems to have a slightly slower rotation spee for their largest drive. Right now the rotation speeds are 7200 for drives up to 400gb but only 5400 for the 500gb drive. I have a 160gb drive that is 5400 rpm and occaisionaly get a "drive responded slowly" message. I'm not sure if it had to do with the rotation speed. It was usually after it was dormant for a while. Any opinion appreciated. Thanks. Geno