I only had a short time on my free day in Kampala and also needed to get back to the airport for my flight.  RangeLand provided a pretty full plan that allowed me to see everything I wanted to in the city:  mosque, churches, presidential/king's palace, museum, and even the Kasubi tombs which are officially closed and a construction site but I was able to get a peek.  Driver was friendly and a good conversationalist.  I got to see what I wanted and then dropped off with plenty of time (despite both traffic and rain on the way) at the airport in Entebbe.  Would definitely recommend for a quick city visit added on to the airport transfer!