As far as I can tell, Darjeeling and regular old Irish breakfast tea essentially taste the same. But the former is more expensive. I think I've been scammed by Big Tea.
I'm on a weekend vacation and forgot to bring my tea and the international grocery didn't have it, so I settled for Darjeeling. I can barely notice the difference. It's so subtle that it might as well just be a different tea brand.
Often I will just drink it straight, especially if with a yogurt. Or a bit of creamer, whereupon you can still taste it through that and also with breakfast:-).