I've tried it, and maybe I wouldn't know it in a blind taste test... but... I'm convinced it tastes better. Not enough to justify the price. The bigger issue is the growth hormones used in many (but not all) dairys. Some folks believe they get passed through the cow and contribute to growth problems in children and potentially other issues. The certified organic milks are generally (in theory) not using those types of chemicals and therefore better for you. I can't say I'm convinced either way. I prefer organic, but, I also eat fast food and other not-the-best-for-you type of things so it's not really an issue to me. I maybe buy 5% of our food items organic and usually because it's not much more expensive but a lot better quality product in at least taste.
See for yourself though, buy some fresh organic stuff and compare it to fresh store-bought other stuff (things you normally buy) and I'll bet you find they are better, and I've yet to find one that's worse. Given that, and the fact that organics may be better for your health, you really only have to use price to decide if it's worth it. There's a bunch of folks on here who think organic is hocus pocus or fraud and no different. I'd say in some cases they are correct, YMMV.