Anyone know if there is much difference between the Dansko Professional and Merrell Encore Moc Pro? Much difference between the Dansko type and a Nike Shox or other 'sneaker' type shoe? Is it just personal preference? Also, how much height does the Z-Coil shoe add? (Looks like a bit...) I'm already 6'5", and don't need to be even scarier. Getting ready to start RN program end of August, glad to have found this site, and appreciate any advice.