How good is Miray's HD Shredder Programme?

[#1]

I shall appreciate any input on the above software.  How good and reliable is it?  Any one tried it?  If so, your feedback will be very helpful.
Many thanks.

[#2]

For free space wiping, I use either CCleaner or Recuva. For file erasure, I use Eraser 5.8. All free programs. That said, none of them can erase two particular 'deleted' files from my hard drive. I'd be interested to know if this program could.

[#3]

I have down loaded it but haven't got round using it on an old pc.  When I do,  will post the results here.
Chandu.