Why don't you get a quote from each before you decide. Just call and ask for a quote. Be SURE to get similar coverage amounts, otherwise the comparison is pointless. Simply throwing a poll onto a website is a very poor way to decide car insurance.
allstate, and by the way, ballance the answers all together, and which ever insurance gets most voted, u should trust. count how many people answered allstate and how many people answered state farm. then choose the one with more people.