Router to create an: VPN server and My Dropbox

Hello,

I'm looking for a router with support for creating VPN server and to create a Mydropbox.

I found these three but I'm a bit undecided:

- AC1900 Router Asus RT-AC68U;
- NETGEAR R7000 - Router WiFi-AC1900 Dual Band;
- Linksys WRT1900ACS

What do you think of these models?

Know any better?

Budget is around € 200

Thank you