Well, no real need for me to chime here other than to say all of Duke's cabs are phenomenal for electric bass, but there are different flavors of awesome. Thunderchild vs Hathor series. I prefer, not having had the chance to really play through a Hathor, the TC series. That's primarily because I want a more refined, smooth, sound vs the more traditional rock tone I think Duke has created with the Hathor series.
My understanding is that the TC115 will blown down a barn. I know from personal experience that the TC212 definitely will blow down a barn.