I'm just gonna barge on in this, and just say that Etrust really is the best. I used to use Avast on my PC, but after a virus got on my PC, Avast did a bad job of cleaning it up. That was some time ago, but Etrust really is much better, alot less complicated to configure, and has far less memory usage.
I recently switched from Avast to etrust also. I had no problems with Avast, but with all the recommendations (elsewhere, not just here) and the one-year trial, I figured I'd have nothing to lose.