Hey thanks lads for answering, the rooms an outside garden room I've built for my mother, our main house where we live has Lutron Homeworks, been reliable , and I was torn with putting a single link lutron processor in with a 4 dimming channel module and 4 fixed channels for wall lighting, i looked at Grafik Eye QS also being designed for really a one room solution..... my mothers house has a small amount of C4 in already but no lighting ....... Never had any experience with C4 lighting modules that's why I threw it up here for some advice off the experts :-)- It makes sense to stick with C4 i think, as the main house has some C4 in it but no lighting to be honest / just has audio switching for some tv's etc............ Lutron is good at lighting but C4 is much cheaper for sure, the rooms cost me a small fortune to build to be honest ,and I didn't want to spoil it by putting in something I had no expericnce with ... as long as the modules are reliable then I'll be giving it a go ......... thanks lads for all your help, very much appreciated - Best Andy