I have two Western Digital hard drives in my G4-450 AGP (20 and 40) and use the 40 as backup drive using Carbon Copy Cloner (CCC). The old Western Digital drive is getting full and needs to be replaced. What are some of the things I should look for in shopping for a new drive other than price? The old 20 GB Western Digital (WDC WD205BA) has been great and I would like the same drive with more storage. The problem is there are so many different drives on the market (even WD models) it is hard to pick one. Yes, I know bigger is better but I really don't need the extra space. The smallest I would consider is a 40 but something like an 80 or 120 sounds nice and they don't seem to be that much more expensive. Dick