Hey, I take a lot of photos so i need the space/back up. These are the parts I'm thinking about, I just need further advice from people who have more experience with these. Can you help me narrow down which parts I should get for my external hard drive? Any advice would really help. Hard Drive: 1TB - Seagate Barracuda 7200.11 ST31000340AS 1TB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM - $189 (32 MB cache) - Western Digital Caviar GP WD10EACS 1TB 5400 to 7200 RPM SATA 3.0Gb/s Hard Drive - OEM - $179 (16 MB cache) - SAMSUNG Spinpoint F1 HD103UJ 1TB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM - $179 (32 MB cache) 750GB - Seagate Barracuda 7200.11 ST3750330AS 750GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM - $129 (32 MB cache) - SAMSUNG Spinpoint F1 HD753LJ 750GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM - $119 (32 MB cache) Enclosures: - OWC Mercury Elite-AL "Quad Interface" - $109 - There's another one that's exactly the same, but houses 2 SATA drives for $119 here. My question is, should I just pay an extra $10 for the extra space for when i get a second hard drive? The point where I get confused here is that I wouldn't want to use it as RAID 0 - I want to be able to just use them both as separate hard drives. - ministack v3 - $109 (I'm considering these enclosures because I like the flexibility of being able to use USB, Firewire 400/800, eSATA) Last Questions - What is the difference between a 7200 rpm vs a 5400 to 7200 rpm (Like the 1TB Western Digital one above) - Should I just get 750 GB instead of 1TB? I've been reading around and I know hard drives naturally fail, but it seems like 1TB aren't as stable as the 750 GB's? - Will the enclosures I mentioned work with the internal hard drives I listed above? (Just need to make sure it'll all work before I buy it). - Will heat be an issue with any of these? Thanks!