Well I can't say anything about the other two, but I use Resco Explorer, which seems fine.
As the other guy said, if you've got the device, and got the programs, just try it and see. In the unlikely event that something goes horribly wrong, jus hard reset and reload/restore from backup.
Current - HTC HD2 (Leo)
Retired - Raphael, Hermes, Wizard, Loox 720, iPAQ 2210