Forgot to mention, lots of users will not always play true on a busy dating site. The reason is, is if you're in an area that does not have many users you will not have many close to you. So might be good to join a few and see which has the widest "selection" you like.
Also watch out for sites that use bots, or as they like to call them in the dating world "cupids". They are just paid people, or automated scripts that reply to make you feel "wanted" to hopefully upgrade or something similar. It is a very popular thing done in the Adult Dating world.