the good ones are the ones with the booty inside. the mids.
MIDS: SE, XT, and Decon all are "the good ones"
the lows are on a slightly different sole, and just have straps to center the tongue.
no full booty inside
if you want a Blazer low, get the GT ones. i find the actual low to be very stiff and for some reason my true size is just a bit too small. my foot pours over the side of the shoe on the inside. it's like the lows are... cut in farther.