Although these aren't much to look at, they definitely make up for it in the comfort department!  No break-in period required, they are incredibly lightweight and comfortable.  I was afraid that my heels would start getting blisters, but nope!  Not even after 4 hours of dancing the first time around!  And I've been dancing in these for about 4 months now, very practical and durable.  I wish I ordered one with a higher heel though.  Also, spinning isn't as smooth because the heel is a little thick, but again, these are so comfortable!  Order your normal size; I ordered 1/2 size up based on other reviews, and they are a little long for my length, or maybe it's just my feet.  Sizing just gets so subjective, so just stick to your normal size.  But because of the strap, I'm able to keep them on, so no problem there (and I really didn't want to deal with the return process, so there you have it, lol).