WiFI routers that support openvpn

I have tried several models (see following for the mfg) and canot seem to get it right. Either the router will do openvpn server but wont allow me to use multiple subnets internally forcing me to do double nat on my traffic, or the VPN is PPTP not openvpn, or the wifi drops constantly. 

Anyone successfully set up openvpn server when their internal network has multiple subnets (small business maybe) and using the xb7 gateway in bridge mode? 

I have tried linksys, TP link, netgear and a couple off brands that got great rating but are garbage.  I tried d link about a year ago and had so many problems (when I had a static public ip with a different ISP) i black listed it. for VPN i have blacklisted the aforementioned products, for wifi tp link is "dead to me" it wont connect between 6 pm and 6 am to wifi (my phone, tablet and even computers say p/w invalid) when I dont have parental controls on, makes no sense at all. I am considering trying port forwarding but the xb7 seems to limit the IP address to one from the DHCP pool which makes no sense