Super Core Hardware suggestions

Hey All We are looking for suggestions for a device to act as a super Core Device / MPLS P router only. There seems to be plenty of Chassis based solutions out there that also cater for a lot more. We ideally would like a 1RU or 2RU device - Handling MPLS / IGP only * Ideally 16 to 48 ports of 10Gig - SFP * Non-blocking line rate capable on all ports. * MPLS / OSPF /BFD / ISIS / RSVP-TE capably. * Deep buffers on the ports would also be nice * With a possible option of 40Gig uplinks.. Thanks