I run a small ISP in Tennessee.  COVID has forced a lot of people to work from home.  I am starting to run low on IP's and need to consider CGNAT.

I do have IPV6 space, but we all know that until we force everyone to move to IPV6, we need to keep IPV4 up and running.

I could buy more space, but I am really wondering if that is the best option.  It is expensive. I know CGNAT devices are expensive as well, but it looks like I could stretch it out a bit.

My thinking is to convert about 50% of my subscribers to CGNAT.

I am interested in vendors or devices you have used in the past.  I already know about the pitfalls many of my subscribers will have with CGNAT such as VPN's, Gamers, etc.

What are your thoughts on CGNAT vendors?  

A10Networks

F5Networks

Others?