Blues guitar help. Boss BD-2 Blues Driver Pedal or Ibanez TS9 Tube Screamer Pedal?

Ok I play out of Fender frontman amps, use a strat mainly, also occasionaly a les paul for when I want to mix it up. I want a really good blues sound and I've listened to recordings of both. Both sound good, but I can only get one for now. Any insights, experiences, etc.? Thanks