Ok, the negative heel info on the Earth Shoes website is good, but a little too vague... well, for me at least. I guess it just is better to know what others think. I have located some places that sell the shoes, but I work all the time and don't have time to try them out. I'm wondering what everyone thinks of them compared to other shoes... is there a big difference with the negative heel? Are they hard to get used to? Or are they just really comfy when you put them on? Those ones on veganessentials.com are only $40! Seems like a steal compared to others. So, do you think it's worth it to take a plunge and just order a pair?