Impossible to say - depends on the strength & quality of the digital signal at your location; whether you can position the indoor aerial near a window facing in the direction of the transmitter from which you're receiving; & the actual indoor aerial. Don't blame if it doesn't work, but I've had reasonable results where I am with an aerial similar to
this.
As for an actual Freeview box, there's not much to choose between them - so I'd advise going almost as cheap as possible (£20 or so) if you're not sure about your reception.