I like the Bell Citi. It got high marks from Consumer Reports and has an easy adjustment system. The visor is removable. The price is less than $50.

If you do go to a shop to try on gear or seek advice please don't go to the internet afterwards to save a couple of bucks. The service the shop provides by holding inventory for you to hold and try on is worth a couple of dollars in premium. Now, if the price is out of line that would be another story.