I'm thinking the external one since it's less of a pain in the ass to install/if I get a new PC. However, I've never used an external HD before. Are they any good? Is USB2.0 fast enough to, say, play games off of that hd?
Also, has anyone ever had any experience with Acom? My current hard drive is a Western Digital and I've had no problems, but I've never heard of Acom.