{ "gCenterGeo" : { "$nearSphere" : [-111.6266316,33.232841] , "$maxDistanceInMiles" : 25} }
Here's an equivalent query I make against a database in our Application - the code is extracted from our console (where we log it prior to going to the DB - so I'm sure it works on the front end) - and we are making that call / similar ones throughout our app.
Below is my execution against our Db --- any differences that you can see ?