We've just invested in a pair of the iColour lights with the extra controller to get better control over them. 4 bulbs on each one.
I can select 1 of 9 colours with the press of a single button. there's also control over the speed, mood of the lighting, it goes on.
Really simple to operate.
We used PAR cans for 12 years and looking back now, unless you have a case for them, they can be a bit temperamental with connections popping out and bulbs becoming disconnected from their connectors inside. They were home made jobbies but made well so that you could disconnect each light separately as they all had euro sockets on them.