Can someone tell me why they chose the vertex illumina over the radions? are they that much better? I herd people are getting great results from the radions? I was looking at a 2 foot cube to do sps tank and I like the illumina personally over the raidions as I think they are made better. Vertex state that you only need to have a 1 foot unit over a 2 foot tank? Currently in Australia they retail for $1250. The radions are $950. Some of the research I have done says that the radions give a better spred and have a much higher PAR reading. But again vertex say this as well. :headwally: