Connecting remote sites with VPLS or L2 VPN from ISP?

I'm thinking of connecting our remote sites to our 2 DCs with an ISPs VPLS service. I'm thinking of getting the same VPLS service to all our remote locations (30 or so), in this way the remote site's router could run OSPF with each other and the DC routers. Any downsides to this? Comparing to L2VPNs where I would have a MPLS connection to the remote site with two VLANs, one to each DC

VPLS service supports VLAN tags too so I could divide the service to smaller blocks or even go down to 2 hosts per VLAN.

Thanks for any ideas!