4g LTE Router Ai Cube Replacement

Hi All,

I currently have the Huawei Ai Cube with a Three unlimited sim card and have had for over a year now. Its progressively got worse and I can rarely hold more than 2-3 mb connection. The coverage is supposed to be "Very Good Indoor and Outdoor" based on coverage checking.

I can't get Fibre Broadband in my location sadly (somewhat Rural), so I am wondering if the router is not helping as it has no antenna and no option to add an antenna.

So for some time I have been looking at some of the Netgear Routers and was wondering if this is going to improve things and if so, which router would be the most appropriate?

Thanks in advance :)

Matt