I've had both indoor shoes (flat sole) and turf shoes with those little rubber studs and it's the same shit really... If you spend your time on concrete most of the time like most freestylers do, soon those studs will wear out and so you'll have a flat sole. I'd say it's more important for someone who plays football on turf or indoor, then you should choose depending on what surface you play (most) on.
:cheers: