selling online

hi, I am pretty new here
just have a question
what is your guys expiernce with selling a car online?
which websites seem to be the best
right now I am considering either autotrader.com or cars.com
any personal expiernces selling on either of these sites?
if on a differnt one, how was it, how long does it take to sell at a reasonable price, not trying to get my car the hell out of here, but I would like to have it sold in a few weeks

Personally, I like autotrader a lot better than any other selling site. There's more cars there in my area than any website I've come across, which makes me browse there more often.