Can anyone recommend a data recovery company that had successfully recovered data?

WD External Drives WD Portable Drives
1

Can anyone recommend a company they have used to recover data from external wd hard drive? How much of the data was successfully recovered? Could you use the files afterwards??

2

Ontrack is really good.

3

Have you used them?

4

Other than ontrack has any one used:

Disklabs or
Stellar
??