I signed up for a year of Pro last year and have generally been pleased with it.
Because anti-virus can change dramatically year to year (at one time AVG was decent, even Norton and McAfee were good back in the distant past), I reevaluate my anti-virus choices on an annual basis.
I was going to go for another year of Avast but then they started spamming renewal ads to my desktop every 4 hours. No matter what I was in, BAM! there’s an ad telling me to renew and that my year is about to expire, as if I had forgotten when told me 3 hours previously.
In order to get renewals, Avast turns into Malware/Adware and harasses it’s paying customers. I contacted support and they confirmed that I was getting the messages and their solution was to set up auto-renewal.
Avast, you folks better check yourself. Currently you have a great product, but it’s crappy decisions like this which will turn you into another has been and open the door for a product that respects its customers.