I've been thinking which one would be cost efficient and would bring good result for a 36x30 coverage, SPS dominated. I'm considering 3-4 AI sol vs 2 Radion. Mrsaltwater tank covers some early review of Ecotech's radion and I know couple of people here have owned AI sol for sometime now. Well, I hope you guys could share your experience and advice. BTW, AI dropped their price to just $399 and Radions listed for $749. Thanks in advance