Never heard the PG's, so hopefully no one bashes me for giving my opinion, but I do have a pair of the CDT CL-S60A installed and I will have to say for 99 bucks they are a huge upgrade over my old JL co-axial, but I do feel they lack some mid-bass. I have both doors deadened but not totally sealed so I guess that may help some if I were to do that, but I am in no way disappointed in them b/c for 99 bucks how could you be.
They are being pushed by eclipse amp at around 90wRMS per side and get **** loud and stay very crisp. Some songs the bass is good enough to really feel in your legs, but i highly doubt it could rattle the mirrors like I heard about the PG (maybe they just had shitty mirrors???).
After reading this I may say try out the RSD's. I may give them a buy and see. Again for under 100 bucks what is there to lose....except maybe 100 bucks.