Student Response Systems (SRS) take many forms but we argue that there are compelling reasons to use some form of SRS in lectures and seminars at some points in the year, irrespective of subject taught and setting. Deciding which tool to use can be a challenge which is why we have selected a range of cloud based SRS types with varying functions and levels of difficulty and offer reviews of each here using the 'SCORE' analysis system enabling the reader to compare the perspectives of experienced users of each tool before trialling one or more of them. The tools we review here are: Todaysmeet, Slido, Polleverywhere, Mentimeter, Socrative, Kahoot and Zeetings.** Note from Authors 17th May 2018: Since publication we have received notice that Todaysmeet will cease operating in June 2018