If you want an easy way to get your flash away from your camera the ET-S2 is a great device. It's easy to use-you can use it in TTL mode-it's compact and light weight. It's almost perfect--not quite but close. The only down side is that depending on the light bouncing around the flash it may or may not trigger the flash. It is not as good as pocket wizards. That being said I find that it triggers in the great amount of situations and I would buy it again.
Bottom Line Yes, I would recommend this to a friend