I find a Gem or Injector to be closest to a straight razor shave--and they are cheap on the auction site. I got a NOS Gem for only $20. However, if you don't want vintage, you can choose something like the King Cobra, Mongoose, or BBS-1 as they use the Kai or Feather single blades. But be prepared to pay since they sell for $150+.
I also have the EJ89 that was my first step into traditional wet shaving. Great DE, but it gets very little use from me, anymore. I have a Merkur slant that I prefer as a new DE.