Please look here
for the instructions to remove "Antivirus Plus".
Once you run Malwarebytes, you may also want to think about opening a new topic in the "Am I infected" forum or ask one of the Mod's to move this post to that forum and post your malwarebytes logs. By doing that, you will get help that are experienced in removing spyware and malware programs.
As for the "best" antivirus on the market today, there are many different thoughts on which is the "best". My personal favorite is Eset Nod32 Antivirus. I have used many in the many years I have been working on computers and "at this time" find it to work the best for me.
As for what everyone else has to say, you can search the forums and find many different trains of thought as to which one is the best.
Hope this helps,