I watched the Alegria show and thought about going for a pair of the Sedona boots. However, there wasn't quite enough information - I'm a 5.5 but wasn't sure if I should go for the 5 or the 6. By the time I thought to risk it, they'd sold out, so I've missed out for now but does anyone know what size I should go for? And are they as good as they were made out to be on the show? I don't want them to be too big as my heel slides up and down when I walk. Thanks for any help - my feet are killing me when I walk right now and I desperately need to comfy and warm boots or shoes.