Hi Burnz,
It totally depends on you which network you would like to be extended. Technically 2.4 GHz network would have a bit more range compare to 5 GHz, however, speed would be more on 5 GHz.
It doesn't matter which network we are connecting the Almond+ by default it provides you both 2.4 GHz and 5 GHz network all the time. Hope the information helps you!
Best Regards,
Ashok Kumar,
Securifi Technical Support.