Conclusion:
The results not only show that SpySweeper was able to detect more objects than the rest of the pack, it also shows how users should be careful what they pay for. SpyRemover looks extremely similar to SpyBot S&D, yet it was not able to detect more than the freely available SpyBot S&D. In addition, SpyBot goes beyond SpyRemover by creating a backup of the registry and a system restore point. I would rather install SpyBot S&D and contribute to the cause by donating to the authors, than to pay for a rip-off.
Though the apparent winner is SpySweeper, the best tactic for removing spyware/adware is to run more than one application. Saying this, it is recommended to run SpySweeper, AdAware and SpyBot S&D to ensure that your system be as clean as possible. As for the other two applications, I would not recommend them, being that both applications charge a fee to remove half the objects another application can remove for free.
