Howdy, My trusty PPC Mini needs a new hard drive. I'm considering two different ones from OWC: Option #1: $50 Seagate LD25.2 80GB with 2MB cache and 5-year warranty Option #2: $65 Seagate Momentus 5400.3 160GB with 8MB cache and 3-year warranty The extra capacity and $15 price difference don't matter much to me. What I'm most curious about is the cache difference. Will the Momentus' larger cache result in "better" performance in some way? I have a vague understanding that it will make the machine more responsive...or something like that. What say you? Thanks!