What is the max # of vpn gw to gw tunnels supported? What would you recommend for the remote router - 1 user/ 1 phone? Cable modem, most likely.
RV042 supports 50 Gw-2-Gw tunnels. As for the remote sites, you could consider WRV210 for its Wi-Fi, VPN, and lower cost. However, using RV042 in a remote site provides an option for redundant internet connection.