I have pretty narrow feet as well, and have both the Do-Wins and the 2008 adiStars. I much prefer the latter as I feel significantly more stable with them, although I just broke the metal loop through which you thread the strap, probably from yanking on it too much. I think you could be OK with the Do-Wins if cost is an issue, though you'll almost certainly have to cut the straps.
140kg C&J | 90kg Sn | 500lb. DL | 1:15 400m | 15s FL | BW Press | 1:20 500m row
per aspera ad astra