|The problem with anti-spy is the range that the anti-spy cover so may you scan your pc with (antispy1) then the results 12 threats, scan with (antispy2) the results 16 threats, and there are 2-4 additional spies had been discovered in on of them.|
So who can I determine who's the best?
I built my opinion on the (number of high risk threats) that can be discovered by the anti-spy.
Tracking cookies always rated as medium risk also it can removed manually so don't be aware about it. (In spit of it may be danger).
About your question Spyware Doctor is very good and it had a wide coverage for threats also you can trust:
1- AVG anti-spy (Free)
2- Ashampoo (Free For 40 Days )