Win XP Pro and a good anti-virus - NOT McAfee

When Microsoft stopped supporting XP I switched from their included antivirus/firewall etc. to McAfee and it has been one issue after another.

I have been getting error reports from Visual Basic Error Reporting on the McAfee .exe when I do updates.

After selling me another year's subscription by phone, I called with this issue and they NOW tell me they don't support XP anymore. I hate McAfee.

Is their a good alternative. 

I was told kaspersky wrote Microsoft's version.

Will removing McAfee cause me any problems?

Thanks in advance.