While I belive Vipre is an excellent AV product a PDF from the creator is bound to be somewhat biased.
"MX-V™ Advanced Malware Behavior Analysis" they brag that they have this and MSE does not. Why not mention that no one else has that either because it's their own proprietary thing? Of course MSE does not have that - MSE has their own detection algorithms that they created as does pretty much any antivirus software.
It also an unfair comparison due to comparing something that is 100% totally free versus a premium paid product. Yes you will get more features for a paid product.
A more informative link from Brighthub would be
http://www.brighthub.com/computing/smb-security/articles/124609.aspx and of course checking our Antivirus reviews on Cnet and PC Mag's site as njshorts mentioned.
From the brighthub link above you can find many more comparisons including comparisons of free products and many articles about some of the paid products out there. I have no agenda but simply want people to make informed descisions. I think any decent security software package will have it's pluses and minuses compared to some other package. You will find many brag that their antivirues software is ICSA, Checkmark, etc certified but they often do not mention that a competing product might also be (MSE by the way is too).
http://www.microsoft.com/en-us/security_essentials/ProductInformation.aspx This page give much more details about MSE.
I've not messed with many of the paid AV packages out in quite a long time. Back when I was a net admin we used Trend Micro for the hospital I worked at. Another place I worked for was using Symantec but both were far from their consumer edition counterparts. I used to personally use AVG but it got be be pretty naggy about bugging me to pay for more features and started to seem a bit of a resource hog. I have family and freinds who swear by Avast.
As far as removing PC Doc Pro a long and well know program already mentioned is Malwarebytes.
http://www.malwarebytes.org/products/malwarebytes_free
The free version shoudl be able to completeley remove PC Doc Pro. Another free and easy option would be to run Windows System Restore and restore the computer to a restore point prior to instyalling PC Doc pro.