Since you mentioned a .357 I would suggest a used S&W K frame. Maybe a police trade in. I was amazed at the accuracy of one that I stumbled on, but then, all of my Smiths are more accurate than I am.
Back to your original choices, Kel-Tek or Taurus, I'm one of those folks with a Taurus automatic horror story and will never buy another. I have two Kel-teks, but neither are 9mm. I have not heard anything bad about their 9mms.
Another inexpensive possibility is the Bersa. They have a good reputation and will not break the bank.
Let us know what you choose.