Drew, I agree with you on that. If one wants a free AV that won't cause problems, MSE is the way to go. No BSOD's, no ads wanting to sell anything, it fairly automatic, even the updating. The user can leave the settings as is & be fine. Just choose a time of the day when you know you're going to be on the computer to do the auto scanning.
I would still recommend that when using MSE, to scan with MBAM at least once a month, and SuperAntiSpyware is good for finding & deleting tracking & ad cookies. Neither uses resources unless scanning.
If I were still using MSE as my primary protection, then I'd have MBAM Pro as a backup. I usually only have to give $13-$14 for a Lifetime version. It can be reinstalled onto another computer as long as it's uninstalled from the original. MSE is good antivirus, one just has to be a little more careful. Don't click onto banner ads, don't register for free laptops (it's a scam), stay away from porn sites, use common sense computing practices.
Like I agreed with another member in another thread, if one managed money or wealth on the internet, then pay for protection. Usually those who manages wealth has a security consultant to advise on these sort of issues. But for the majority of us, that's not the case.
Still, I feel that anyone who conducts a lot of online transactions (like I do) needs an Internet Security suite, not just an AV. I'm not wealthy, but I manage my bills on the internet, as well as do the bulk of my shopping. Being disabled, I can't run everywhere like I once could, and gas is so high that it just makes sense to shop at home.
It's up to each user to determine their needs, as far as these things goes. I feel safer with paid protection that has a solid reputation behind it. ESET is among the leading providers of internet security in the world (as far as consumer use goes).
AVG, I wouldn't trust it for anything, except to help fill the trash can.