Delusibeta said:
Personally, I like Avast. Sure, VIRUS DATABASE HAVE BEEN UPDATED can be a little annoying at times, but otherwise it sits there and does the job quietly. Until A VIRUS HAS BEEN DETECTED. Yeah, it has a crappy voice synth.
I hated that crappy synth voice too. Note I said hated - you can turn it off. It's in Settings|Sounds. Unchecking Enable avast! sounds will turn off all sounds. If you want some sound and only want to eliminate the talking, leave Enable checked and uncheck Voiceovers at the bottom of that page.
OT: I've been using avast! (silly exclamation point) for a couple years now. It's free, updates often and I've yet to be infected. It's easy to use and configure and it's not too intrusive.