When you buy Brooks GTS 17's expecting a consistency fit, they vary greatly in support based upon the color.  Some are very squishy, some force your gait to shift uncomfortably to pigeon-toe and some actually offer incredible stabilization.  I tend to pronate or over-pronate and these shoes, which I think are the best looking, are also the most comfortable for me as they provide incredible stabilization which makes them my most comfortable pair.  Unfortunately, since they are last year's style, they are impossible to find except at a ridiculaous price. The Metallic Charcoal/Black/Rose Gold is also pretty good for stabilization though it is a little more cushy.  The closest to these in fit is the White/Silver.