Please suggest some non-signature based Anti-virus like Dr.Web Katana (behavior based) both paid and free
Sounds like you would enjoy my setup, as i too prefer no real-time traditional antivirus.
Sandboxie + VoodooShield has you covered.
or
Sandboxie + NVT Exe Radar Pro
or
Sandboxie+ NVT OsArmor (I think Sandboxie+Exe Radar Pro + OSArmor is personally a bit too much, but you could do that too)
or
Sandboxie + SecureAPlus (uses cloud signatures from multi av, but its essentially an anti-exe such as VoodooShield/Exe Radar pro)
You can add as many on-demand scanners as you like too such as HitmanPro/Emsisoft Emergency Kit/Norton Power Eraser/MalwareBytes/Dr.Web Cure It etc.