I have the Sports Ryder package on my EL and I am very happy with the final result. All of my friends have it on their carz and they havent had any problems at all. I highly recommend Pedders altho I dont know ne1 with Monroe so I cant say nething bout them.
Either way it will be a huge improvement on what u have now!
My ride: EL Falcon - Pedders Sports Ryder Suspension, 18" Advanti Lugarno's, Extractors into 2.5" exhaust with hi-flow cat, JMM Dev 3 HL Cam, springs, vernier cam = 132kW ATW.