I have two 12 inch snares that I would consider my "primaries." One is a 5 x 12" Pork Pie and the other is a 6 x 12" DW. Both have maple shells and I tune them similarly. The extra inch of depth on the DW adds a bit more warmth of tone overall but for the most part, they're pretty evenly matched. A lot of cats tend to crank up then tension really, really high on smaller snares to maximize the "crack" that they can produce. I have found that if you tune them medium tight on top and the bottom only slightly tighter, you'll keep the majority of the crack and at the same time add a little more depth to the sound of the drum and musically it will fit more situations for you. My only real complaint about using a 12" primary is that it can be difficult to get a consistently good side-stick sound...but I guess a groove wedge or small jam block could settle that for you. Hope this helps.
B