What is the fine-grained topic of the following text: Recently I had an excellent question from a fellow Happy Saver who had been comparing SmartShares, SuperLife and Sharesies, not so much to find the lowest fees, but to work out which has the smoothest and easiest system and which one allowed him to purchase shares in the fastest time. Only return the topic.
Comparing SmartShares, SuperLife and Sharesies for ease of use and speed of purchasing shares.