RB433AH vs RB450GL hotspot

Hi

I usually use an RB433AH for my hotel hospot setups

I was wondering whether the RB433GL wouldn’t be a better device, since it is Gigabit capable

The RB433AH however has 64 MB Flash NAND - I couldn’t determine if the GL also has this

So basically my question is what would be the better fit for a hotspot ?
And what is the 64 MB Flash NAND used for ?

Thanks
yann