I bought a Bodum Santos vacuum coffee maker for my sister as a graduation gift. Aside from the fact that she absolutely loved it, it makes wonderful coffee. I never thought that the process of brewing coffee could be fun. The beautiful clear glass allowed us to watch the water slowly rise into the upper carafe. The vacuum technology behind this method flushes the brewed drink from the top carafe down into the bottom. The instructions are simple and grind size does not make a difference in this method of brewing. This method of brewing makes some of the hottest coffee possible. The only cautions I have about this machine is the fact that it is almost completely glass and might break if knocked over.