Which of these should I run with ESS in real-time?

[killua24]

MBAM, SAS Pro, Threatfire, Sandboxie?

which is the best? I only want to run one of these so that my computer
won't slow down that much...

any suggestion?

[Hotep]

I have been using SAS Pro in real-time since ESS was released and have had great results! SAS Pro resource usage is very low, you will hardly know it's there. IMHO I think it is the best complement to ESS. It really makes up for the weakness of ESS's spyware protection.

[COSMO26]

I can confirm SAS Pro as a non-conflict/resource issue with ESS although my conservative surfing habits haven't triggered an Alert.