Really Good Data Recovery Software.....Any ideas ?

Hi

My 2tb WD hard drive decided to die and downloaded Stellar Phoenix software to recover the files.

The software was working away and I recovered about a quarter of the info when my 2 year old son pulled out the hard dfrive usb connection so I had to start again. Oh well !

However since then the Sterllar Phoenix cannot even see the hard drive and although it is visible in my computer I cannot get the revovery softweare to work.

Is there any better software i can use that might work?

Also wondering why the hard drive has deteriorated further and why it stopped working in the first place ? The whole thing is very puzzling to me.......

All advice would be very gratefully received.

Dave