Spyderco Endura, or Spyderco Manix 2, or Spyderco FRN stretch 2 VG10, a Kershaw Blur in S30V, or CPM 154 ( both Assisted openers). Several other Kershaws too, depending on what size you like, which steel, and if you like AO's or not. They are all pretty much can't miss.
If these are too big then go down in size to a Spyderco Delica. All great, all under 100.