SI or Altezza?

hey guys

i just had my car inspected today and the shop dudez said that my tailz wouldn't pass so i put the stocks back on then i got the inspection. NEway i'm going to get some new DOT APPROVED tails this time and i wuz wondering... do you guys prefer Altezzas or SIs. I'm stuck between the 2 and i luv them both. Also... Where can i get some SI tailz!?!?!?!? i've been looking around and still nothing.