I am so confused now with the new line of skates and their corresponding numbers. Currently my son has the X7.0's and will be needing new ones shortly. Is this correct, the APX2's are the top, come in sizes as small as 3.0 JR, the X100's the next level down, (very close to the APX) and come as small as 1.0 in JR. Are there any changes to the X7.0's? Thanks '