Suggestions for cast iron tawa for making dosa

[Tejas01]

While I was almost decided on getting the non-stick tawa for dosas but seeing the benefits of cast iron over non-stick made me to change my mind.
I need some suggestions as to which brand should I go for and the quality of the same.
I am looking for a flat tawa instead of a bordered ones at the edges to help in easy removing of dosas.
Are there any cons of getting a smaller than 12 inch/30cms tawa. Most of them on Amazon are 12inches ones.

Also how should we maintain it?

 

[minuteman]

@Sushubh still using Solimo cast iron? How is it still good? I bought the same few minutes ago

 

[Sushubh]

AmazonBasics but yes. No one likes to cook on it at home. I mostly use it for sautéing broccoli