I bought this flash to go on my new 40D and although i had previously shirked a flash i am very pleased with the results. It comes with a great carry bag and stand, although it cannot be used off camera unless you have another on the camera to fire it. The sensor seems very good and in automatic produces great results.
I bounce this off the ceiling for most shots and the result is a perfect even light, no shadows, and because it's so versatile it doesn't matter what angle i have the camera at.
One word of warning, don't scrimp on your batteries! I used a cheaper brand and it reduced my recycling time to nearly a minute, useless! After some experimenting, including the new lithium AA batteries, i have found that the energizer rechargable 2500 batteries are the best. Practically no time between flashes for the first 5 flashes and then it recovers superfast and you can do it all again. Great for weddings and children photography where you just can't wait.
Buy it now and enjoy blinding your friends with it!