Hum, the ones I would recommend would be the Olight M2R Warrior (probably not that much “non-expensive”) and eventually the Klarus XT1A and XT1C 2018 versions!

I am waiting for the XT1C to be available on Gearbest or Banggood to grab one, once I had shipping issues with XT1A!
I will be looking for that as it has almost all the “tactical” requirements: direct access to Turbo, Strobe and Low modes.