Bitdefender vs Avast | The ULTIMATE Comparison (2018)
Both Bitdefender and Avast offer excellent protection against all kinds of malware threats, but the former is slightly better in terms of occupying system resources while the latter offers more security-related features and extra utilities in both its free and paid-for products.
Read the whole comparison here: Bitdefender vs Avast | The ULTIMATE Comparison (2018)