Internet routes in Gobal Routing Table or in a VRF ?

Hello again, Another question for BGP VPN experts. If you provide Internet access and VPN service on the same MPLS Core network, what are the pro and cons to transport in the core the public internet routes (the full 120.000 prefixes) as VPN-V4 prefixes and announce them through a VRF rather than as common global routes ? What are the trends in terms of security vs memory vs stability ? Thanks in advance.