Moving from FVS318 firewalls to something with DD-WRT

Greetings. I am new to this forum but not new to open source firewalls. Mostly IPFire and PFSense.

I have had most of my small clients on Netgear FVS318 firewalls for years and they have held up very well. I used them for VPN, VLans, etc. I need to obviously use something newer as Netgear is moving away from them. I have been looking at the Netgear R6700 and the R7800s and install DD-WRT for more functionality. 

I would like to hear from the forum to get your ideas about what is best for a 5-10 user office with a need for 2-3 VPNs (Laptop to Router) and a separate configurable guest wireless network.

What say ye?

Thanks in advance.

Tom