Mikrotik VPN Connection


I am going to make VPN connections between Mikrotik routers.

I have 1 main CCR1036-12G-4S Mikrotik router and 9 Branches RB750G routers.

On the CCR1036-12G-4S internet packet is 100Mb/s local - 100Mb/s global and on RB750G router internet packet is 5Mb/s local and 1Mb/s global.

I want to get 5Mb/s global on RB750G router so I decided to make a VPN connection and all traffic static routing.

I want to connect these 9 routers to CCR1036-12G-4S router with VPN and make static routing of all traffic from RB750G routers to CCR1036-12G-4S.

1. which VPN is more secure?

2. which one has all traffic static routing support?