Dylan BraddockSounds far better. The Bl- Br- is more tonguetwistery than catchy. Anyway I think Dylan is just a cooler name. Blake sounds like a soap-opera or rom-com type name to me.
Dylan Braddock for sure. It's an overall better name and sounds way better paired with the surname. Blake Braddock sounds rather strange and silly; that BlakeBrad sound. Just doesn't sound nearly as realistic.