Yikes! You want barrel chairs? That was the 80's, right? If you are concerned about security you can screw down the current chairs. If you don't like the look you can replace them with any chair (secure it or not, your choice).
Let us know more about what you want and why and you may get some better responses.
What I post is my 2 cents and nothing more. Please don't read anything into my post that's not there. If you disagree, that's OK.
Can't we all just get along?