I like that you can see who is logging in, when they logged last time etc.- easy to use! It could be easier sometimes with some of its features but overall it's very good so farI would also recommend this product if your looking into creating an online database or registering people at events where there are not many options around (schools especially).
We have used other companies before which were quite expensive however we had no choice as our previous vendor was terrible!! This one has been fantastic though from what i've seen thusfar - great customer service too.