bridge/routing question

Hi,

I have a network for wisp services, at the moment i have all devices routed with ospf and i collect pppoe in all ap (i have setup a pppoe server for any devices used for ap), this is the best configuration ?

I have see a network with all devices in bridge mode, with various vlan (routed in ospf) for managment or specific applications and a central pppoe-server for all customer..

There is anyone that have tried this solutions and know advantage/disadvantage for any solutions ?

Thanks
Fr4