I voted Comodo Cloud AV, I trust it and it worked better on my hardware, and was lighter overall, in terms of RAM.
SecureAPlus I wont use, strange installation, changed settings without asking, then failed to boot Windows 7 on random occasions and never completed a scan, stuck at 99%. Could not fix it either.
Now, I do have Image backup from before installing,... but I like my settings for now, but the SecureAPlus leftovers still show up a tiny bit, even uninstalling wasn't so good.