SpyCop _ Good keylogging program?

I have been interested in an Anti KeyLogger program for some time now. I have a good number of tax clients that I prepare taxes for during tax season. Obviously, protection of my clients tax information is paramount. I currently have Symantec Corporate Version 10.1.6.6000 as my anti-virus protection and SuperAntiSpyware (paid) as my spyware protection. I also have Sygate Pro as my firewall protection. Additionally, I utilize an external hard drive. I have been considering purchasing the SpyCop software for protection. I understood it to be one of the best. As I really have very little knowledge of the Anti KeyLogger programs I am asking for your advice. Anyone, have any suggestions or recommendations? Any replies to this post will be very much appreciated and I thank you in advance for your reply.

 

Be aware that SpyCop is only an on-demand scanner for (mostly) commercial keyloggers.

 

I really wonder how many guys will stumble over this insufficient, unimportant program and I also wonder how many threads will be opened until they understand that it is a pretty poor and slow tool but like always maybe better then nothing.