I'm very close to pulling the trigger on a new tank and some umbee to start off in my 135 while the tank is being built. I am a big fan of the Rio Mags, and I see that COTA has some. Have folks been happy w/ his Rio Mags, and would you do those or go for the Ultimate Blue's? If Ultimate Blues, are they the same shape and big head - just color change? And where is a good place to find ultimate blues that ships? I appreciate the help.