The OCZ Rally offers exceptional read performance. While the write bandwidth might be less, it is still impressive. When it comes to performance, dual-channel seems to definitely be a step in the right direction.
Unfortunately OCZ used a cap design, which means the cap protecting the connector can be easily lost. Maybe OCZ could add a spare cap into the well-rounded accessory package. Talking of accessories, everything is included, except for software. This stick is geared towards enthusiasts anyway, and these users will definitely have an operating system which supports USB without special drivers. Additional software included by the competition, like encryption or backup solutions, are usually low-quality software - you will most likely find better shareware/freeware.
Considering the price, the OCZ Rally USB sticks are about 20% more expensive than similar sized USB 2.0 sticks, which obviously can not compete in speed. But if speed is only secondary to you, you may be better off getting a cheap noname USB 2.0 stick. If you are regularly using your USB stick you should spend the extra money and enjoy the faster transfer speeds and the life long warranty.