Routerboard for Huawei ME909s-120

Hi,

I would like to know, if there is any difference between RB912UAG, RB922UAGS and RB953GS from the point of 4g-connetion stability, when using Huawei ME909s-120?

RB922UAGS has the most memory and highest throughput WiFI.
RB953GS has two Mini PCIe slots and two SIMs.

In terms of LTE, there really is no difference between them.