Cheers mate, missed this post on my super stoney Easter break hence the late reply. The nugs from AvT are by far the better looking and stickiest of the two, White Cracks are twice as frosty but very Sativa in how her flowers developed with lots of clusters of smaller size buds, both are a very potent heady high that last a good 1.5 - 2 hours with AvT curing into a slightly more stonier smoke and my evening preference of the two.
AvT smells like very lemony when popping the jar and busting up a nugget, usually i taste what i smell but this tastes more of mango to me once packed into the pipe and blazing away. As for White Crack i really can't really get any stand out smell or taste, is kind of spicy/peppery with some sort of citrus and when blazing get a slight piney taste thrown into the mix, is a strange one that seems to change bud to bud each time i smoke it.