well it always sit under 350 mb, when starts, but in sometimes like scanning with other secondary scanner it will goes as low as 80 mb, but when running the full scan the cpu usage will spike upto 50%,
because i set it like that, it will finish full scan with in 2 hours.
this is very huge difference compare to when i used version 5 or 6. and people are missing some setting that is called application control in drweb settings, it has paranoid, medium, optimal (default), user defined. if you know what is this then nothing will affect the pc even when you mistakenly clicked some wrong exe files. thats why i always think better learn how the application works under the wood, then better we can understand what is positive and negative about it properly, so we take extra precaution.
sorry i never tried eis in my life so i can't give hands on experience about it. i lived with kasperky for more than 4 years,
now replaced it with drweb for more than 1 year. drweb version 11 comes with hardware virtualisation and per application permission setting i am eagerly waiting for it to exit beta stage, so that i can install it in my main pc.