To be honest, the brakes were serviced once resurface the rotors and new pads spring 2009 @ 35000miles) unnecessarily in my opinion, and the vehicle has now 47,000 miles and the brakes perform relatively well. But, I did not some scoring on the rear rotors, and given the price I got on some replacement pads and rotors, I never like to leave the caliper piston compressed too low for a long period of time (vehicle was purchased June 2006).
That seems extremely early for that service...I know my old RX300 went 80k miles before the pads even needed service...By the way the rear pistons do compress without a tool...The brake job is just a simple one.