Any putter can putt the ball badly. I played with 2 players at the weekend who both had very fancy Scotty Cameron Newport 2's (Tigers putter) - however, they were rubbish at putting.
Point is just pick a putter that you feel is confortable and that you think you can putt with. I think bad putting is mostly mental - unless you are doing something seriously funky with your putting stroke... It doesnt really matter what it costs or what brand it is.