You can find walkable, safe neighborhoods all across the city, so it will likely come down to the location of your work, and the type of lifestyle you prefer (laid back, in the scene, family life, etc.). I live on the west side myself, so I'll speak to this area.
What is a Concave Wheel? Concave Technology takes the center of the wheel and dips inwards to give it that bowl effect. Rather than exaggerating a bigger lip for the back wheel, and a smaller lip for the front. Concave wheels emphasize the concavity of the rear wheel to differentiate from the front wheel.
having a surface that is curved or rounded outward. Compare concave (def 1). Mathematics. (of a polygon) having all interior angles less than or equal to 180Â°. (of a set) having the property that for each pair of points in the set the line joining the points is wholly contained in the set. a convex surface, part, or thing.