The best replacement for studio one is cubase.

The best alternatives to studio one are rated as following:
★★★★★  cubase
★★★★  pro tools
★★★★  logic
★★★★  reaper
★★★  sonar
★★  ableton
★★  fl studio
★  ableton live
★  cubase 7
★  mixcraft
★  sonar x3
★  protools
★  bitwig
★  digital performer
★  sonar x1
★  ableton 9
★  cubase 5
★  garageband
★  pro tools 11
  adobe audition
  audacity
  nuendo
  logic 9

Your alternative for studio one is not listed? Suggest!
Speaking about studio one, one probably shouldn't forget about focusrite.

Other search terms related to studio one and their ratings are:
★★★★★ focusrite
★★★★ studiolive
★★★★ melodyne
★★★★ behringer x32
You have in mind a companion for studio one and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of studio one in all years. Click on graph for more.
studio one
cubase
pro tools