In the past i was using many different WordPress themes for my blogs. Since Google algorithms changing, most of onpage SEO have to be updated frequently. So i had some problems with free themes because they are not up to date all the time. I needed to fix them sometime my self or change complete design with new theme, but sometime it can be confusing for regular visitors to find out all new details about browsing website... After that i decided to go and buy some quality premium theme from Themeforest website and it was good decision because themes are updated more often and new features added all the time. I am mostly using "Sahifa" and "Avada" themes on my blogs and they are very good with huge amount of options to make really professional looking website.
Do you use premium themes, and how you compare them with free themes? What is your experience and which themes you prefer?