Eh, I haven't seen a recent version in years (only old versions installed, y'know those cheap pre-cracked ones), so I can't really judge on it.Like I've always said in every AV thread till now...
I work as a PC technician, so these are statistics gathered by me on the field in a few years of work:
Almost every PC with malware/virus problems that comes in has Avast. Avast looks to be completely useless in most cases and av-comparatives.org reflects this. I've also had cases where Avast gave problems to the PC (BSODs, freezes, slowdowns) itself.
PCs with AVG and Avira are the ones with less malware on them (I refer to the sheer number of crap that enters the PCs. They're not invulnerable, but they get a lt less crap on them than the others do).
Keep in mind that the PCs that come in are used by the most PC-impaired people around (families, little kids, old people), so they're under a FAR larger risk of getting malware than a normal forum user would. Which is a perfect situation to make a statistic like this one.
Anyways, tl;dr: avast is crap.
What do you think about NOD32?
It's still being sold? I have seen it so rarely that I thought they went out of business or something.
The three major AVs around are Avast, AVG and Avira around here, so those are the ones I see the most. Oh, and also Norton.