arright so my brake master cylinder was fucked so i changed it, the thing wasnt holdin pressure and my brake pedal would just go all the way down and not stop the car... so i changed it and bled the system and the abs system, still wasnt holdin pressure.... any ideas as to why this thing is fucked? im thinkin brake booster but im not sure... help please!

 

so what is worse your car not going or your car not stopping?

 

I'd check thoroughly for a leak. A common spot is between the caliper and the ebrake line. It wont leak unless the ebrake is down. So get under the car with a light and have someone pump the brakes with the ebrake on and with it off. Look for leaks.