If you've ever been interested in the history of Zee Toys or Maisto over the course of the 80s, 90s and into the modern day, you should come over to the Hobbytalk Ask Me Anything with Chepp going live on Tuesday, September 21st and running until Thursday, September 23rd. Don't miss out! You can ask your questions here!
I believe Odyssey Slipways has a 1/2500 Defiant kit they're producing, which is the same scale as the old SFSM (I apparently got one of the last ones of those). Both (and the MicroMachine) are out of scale with DS9, but they're as close as you're going to get.