I haaate Smarties! They're this weird mix of sour and chalk and soul-stealing. When I got them when I was in elementary school, I would try to stack them as high as I could and then knock them down. In my book, they're only good for building material, and they're not even that good at that purpose.
(Oh, and I'm talking about US Smarties! The Smarties sold overseas and in Canada are lovely.)