The developer of spybot's intentions and ethics have always earned my deepest respect, AVG has lost it. But then to some it's all about money.
I guess it all comes down to a matter of opinion, to a degree, as to what's best to use. I agree from the little I've read from Spybot's developer that their intentions are good. But while there are good intentions, there are still the reports that people have having issues or just don't like the new version of Spybot, right? (Of course, there's always people who don't like the new version of anything.) In addition, I believe I read here that Spybot is no longer listed on some respected list of effective software (can't remember what it was), and that along with the fact that I see a growing number of posts that report Spybot (both new and old versions) as being ineffectual -- I guess good intentions (which are truly important) only go so far when examining reliability and effectualness, etc.
In regards to AVG -- what is the reason behind your opinion? I don't know too much, but I realize they are trying to get people to update to Version 8.0 (which is a paid for version at this time) with the small banner type ads and occasional pop-up embedded in the updated 7.5 Free program (which, in all honestly, isn't *that* bad -- kind of annoying, and I didn't like Firefox automatically going to the AVG website when I updated AVG 7.5 free for a few days there -- but in the grand scheme of things, I guess it's pretty minor considering you're getting a free product). However, I've read on the AVG board that AVG A/V 8.0 Free is coming -- so the program will still be free for those who want it (like me), and you're not being forced to start paying. Of course, I don't know the details behind AVG 8.0 Free and if there's going to be ads, or calling home, or other crap like that now (maybe you have the skinny on that?), but I'm hoping/assuming for now it will be pretty much like 7.5 Free (which I've yet to have any problems with). Any thoughts?
Of course, I really don't know much about any of this, so take my opinion with a huge grain of salt!
Re: Ad-Aware SE's definition updates -- I read this:
While you can still (for now) manually update Ad-Aware SE, it doesn't detect and remove the same Bad Guys that Ad-Aware 2007 does.
I guess that's true, but I don't plan on updating due to all the problems I've read about the 2007 version.
Re: Spybot removal -- I also asked around about that little registry cleaner file they provide to run after uninstalling, and found this out:
The registry script deals only with entries that would have been created by SpyBot itself.
Other than making sure there is no Run entry anymore for TeaTimer, or a BHO object for SpyBot SD, the bulk of the entries remove registry stores for TeaTimer in HKCR, and these should be removed.
For the truly paranoid, manually create a System Restore Point ahead of time.
Of course, when I get around to doing this, I'll be making a restore point first!
My stats: Windows XP Home SP2; Firefox 3.0.14 w/ Ad-Block Plus; IE 6.0 (used only for monthly Windows Critical Updates); ZoneAlarm 6.1.744.001 Free; AVG 8.5 A/V Free; SuperAntispyware Free 4.28.1010