Im using the ones from china 9 LED's and 9 600w 400v HPS, ya i think the LED's were around 30k something so budget went down the drain there lol.
The room is +/- 40m2 ( its a funny shaped room ) I've just googled allot also on dutch forums and there are lots of arguments of which is better, basically it is that HPS = quantity and LED is Quality and a mixture is a little less quantity and a little more quality. therefore i wanted to test out the theory myself.