I admit, I am an ESET NOD32 fanboy. But I do so with the very real understanding that no AV product is 100% perfect. And my loyalties vary from time to time.
But for ESET, I prefer to back the sleeper product that laughs in the face of the big names like Symantec. Laughs at their bloat, runs circles around them for performance, and runs on any
Windows OS that I've ever used, without needing to buy a new subscription or "upgrade".
And heck, I can still
download and install their last DOS version. Imaigne that. And yes, I have a retro PC running DOS and Windows 3.11 as a collector's piece
that I rarely ever power on except to show it or dabble in a little trip down memory lane. Emulation is for wussies.
And "that's not all", in the famous words of Billy Mays (RIP, Billy). ESET has been in the business longer than the new names like Kaspersky, and just as long as companies like Grisoft and Alwil (1991-1992).
Did you know that NOD32 is written in assembly language? That's the next language level up from binary, and hence why the core of NOD32 is so darn fast and lightweight.