I love my 430ex II, so much I bought another. As stated, they work amazing inside and even around corners using Canon wireless.
Outside I cannot claim the same as others. Although when darker out I was able to hit 25' without problems, when I was taking shots outdoors in sunlight while being only 10+ feet away the flash would only fire when it felt like it. I changed angles, verified all my settings etc... Then they worked again for about 5 shots and then stopped firing. This happened several times until I gave up.
Now I use Cactus V5's and manual flash so i can start understanding this business of lighting
I won't be selling my 430's though because they are nice, paid for, and the wife loves loves loves wireless ETTL when shooting inside.
60D - Sigma 30mm 1.4 - 50mm 1.8 ImkII - 18-135 IS - 70-200 2.8 mkII - 2x430ex II - 3xFlextt5+AC3 - Einstein 640 w/mc2 - Vagabond Mini