Suggestion for a VPN firewall that can replace SRXN3205

I have a SRXN3205 VPN firewall and I need to replace it with another VPN firewall.  I need it to be capable of handeling a superscope and able to use a routing and remote access server with active directory for verification to clients.  Also have a gateway to gateway set up.  Do you have any suggesstions?  Thank you.