Unless you buy into having everything in your life as a Sony product, then you're paying premium prices for a technology that's not being developed by anyone else.
Compare that to the devices usig Compact Flash for example. I can buy cards, readers and various devices from whatever manufacturer I want. They just came out with 6GB compact flash cards in a type-II format and 4GB in a type-I format. Memory stick is only 18 months behind the times
