I am for Avira 10 even though the updates are a little sluggish. I thought I would like MSE, but when I saw AdAware hooked, it turned me off. In my opinion anything that utilizes AdAware to complement it can't be all that great.
Windows XP Professional 2002 sp3 32bit
Aggressive AVIRA 10, MBAM, SAS, Sandbox
Everything that has been and everything that will be, exists, in some form, within and without, the known and unknown universe.