I was hesitant to order these due to some negative reviews about quality and fit - but I've worn them many times and think they are great!
Two things that make these comfortable
 1. The heel is substantial
 2. The strap across the top secures the foot and makes it easy and comfortable to walk in.
I ordered these in the nude color.  I am really picky about color and have searched for a very, very long time for nude heels that were both very comfortable and a great shade of nude.  These match my skin color pretty closely, but do look a tiny bit off if I wear nude pantyhose (but I am probably the only one who notices.)