Phillip, The Classic and the Silvia are most commonly compared because between the two, there isn't really a machine that performs as well as they do - at least as far as using commercial baskets is concerned. The Classic will heat up the fastest, as it has a thermoblock element, while the Silvia has a commercial style boiler. In fact, while all the parts in the Classic are high quality, all the part in the Silvia are commercial style and quality. If you really enjoy milk based drinks, the Silvia is going to give you the better steam between the two. I hope this help!