Hi I have been looking into this for a while and based on a 1200 watt fixture the etc coloursource range packs a punch and have been very impressed the par version gives you a 91% saving based on a traditional parcan on energy usage and the colour mach based on lee filters is pretty close if your mix and maching on conventional and led and the light output is pretty equal to the parcans, I would seriously consider this range range includes a par, frennel and profile where the par is a fixture in itself and then the frennel and profile range are the same setup as the source four range where the lenses are interchangable and you can get whatever lenses you want (the current source four lenses do fit onto the coloursource light engine but its recommended to use the hd lenses for the led as the source four lenses does reduce the light output slightly), and I think price range the par is at around the £300 mark and the profile or frennel are around the £600 but check with your main dealer as for power consumption the par is 89w with everything running on max and the profile / frennel unit is 141 w with everything at full where if your colourmixing you will rearly have everything at full. the other good thing about these fixtures is you can still put them in 1 channel mode choose the colour temparature and use them as generics with gel in the front of them also Thank You Carwyn