We currently us a sonic wall tz170 in our office which is causing us issues with 3rd, I'm looking at replacing the tz170 but am looking for recommendations that will work fine with 3cx, any recommendations?
May time the basic routers (read inexpensive) work just as well as the pricey ones. Of course if there are specific features ( types of wireless) you are looking for, then you'll pay more
I was one of the pfSense recommendations. The majority of the time I use Netgate's 3 eth appliance. The only time I use different hardware with a full install is when I need more then 3 interfaces and/or more power.
The MikroTik line is quite excellent. You can start with a 750G or upgrade to a 450G. All of our satellite offices are on the 450G. Use EoIP for the phones if you have any need to bridge locations. No overhead, easy setup.