Yeah the platter isn't great, but if it's your first time using CDJ's, any of them are going to suck! Just like turntables, you will never just be able to jump on and use them, you have to practise. Nudging doesn't really work on any CDJ, you have to get used to speeding up and slowing them down.

I use the pitch bend buttons too, find they are really useful because even if you are editing a loop, or using one of the effects, you can still speed up or slow down what is playing, you don't even need to use the platter.
I'll be back...