I'll let pictures speak. I've ran sti brembos for about a year and half already. you can see in terms people worried about trailing piston... practically negligible. in terms of brake bais, you can't really tell a difference. I will tell you it was a HUGE improvement over stock when on the track. I cooked all the stock stuff coming from multiple stops at over 115mph to 60mph to make a turn.
I've learned now, definitely better fluid and better pads. Right now I'm running just the stoptech pads with stop tech fluid and stainless steel lines, and running the 2004 sti front brembos with some basic 2004 centric rotors from rock auto.
I'll be looking into bumping up the pads to something else and throwing in some torque RT700 fluid.
For the price of getting these ($600) it was well worth it in my opinion.