Totem Sttaf is a floorstander so it will sound different. The Sttaf is a pretty good in my book and it does not demand expensive electronics to sound its best.
Totem Model One Sig partnering with a good fast power sub like REL, Martin Logan, or Totem Storm will be a better investment than the Sttaf but you DO NEED good electronics like Sim Audio or Rogue monoblocks for the Model One to sound its best.
Outlaw power subwoofers are very good and fast. The only down side is that they are bulky. They are just as big as a coffee table:-)) If wife approval is a must, you better get a small sub like the Totem Storm, very fast and very handsome sub.