Well like has been said: Decide if a "Bully" style or "traditional" style dog is up your alley.
Bully's no longer carry genetic task ..... oversized Boston Terriers. Genetically they're still down and related from/to the APBT
as are Boston Terriers.
What every your choice of dog; a good place to start is the animal shelter.. WHY? cause you can see what adults act like and what kind of dogs are over populated. Maybe even decide to adopt a pound puppy over a breeder.
If you decide to go for a breeder... Make sure its some who's producing healthy animals wether they know what they're doin or Forrest Gump'n their way through it. IF they care more bout the quality of dog than the green backs
then you have found a better source. No dog should be more than 1500 if you pick it up or 2500 shipped. JMO Unless its a living legend genetically and historically.