Hitman Pro

I ran malwarebytes afterwards to make sure the malware was removed and it was. However, I´m not being paranoid of the leftovers of the malware and need to decide whether I should reinstall my windows which takes hell of a long time and backup my files.. or just feel safe now when I cant detect...

I use Malwarebytes Anti-Malware with Avast! and I'm wondering if I got Hitman Pro as a last resort option, would it interfere with either of them?

Trying to figure out which security software to get for my new gaming/business/work rig. I currently have been using Kaspersky. It's been great, although sometimes it detects something minor, but it recommends to "ignore" it, instead of completely erase. I think it just quarantines it, but...