I'd take the Maxon or Fulltone of those three. I get sick of the TS9
quite often, and then I'll go back to it after awhile...meh, they're ok.
FWIW, this is one of the best boosts I've ever used. Sounds great on most amps I've tried it with:
The clean boost (left) side of the pedal pushes an overdriven amp into heaven! Compared the TS9, it doesn't have as much nasally bite to it, but it comes through just as clear, just in a more pleasant sounding way. Also, tons of eq onboard plus a switch that applies more/less compression and saturation.
This pedal is great for silky, compressed leads over your amp's clean channel also.