looking for compatible modem/router for actiontec T 3200M or T 4200M.

[MOK]

This is my first time here, pls point me in the right direction if this has been posted somewhere.
I have TDS service with 1 gigabit fiber, I am renting their modem/router T3200M, I would like to buy my own and use instead. Unfortunately, the company that makes the product, Actiontec does not sell to individuals.
Is there a similar product that I can purchase ?
Thanks

MOK