I have an 159g opto pearl, Rashida Jones.
So, I also own a 160g diamond, and while I believe THAT disc is for newer players to get better power and distance as they continue to throw it, I believe the Pearl is more for newer players who want to learn proper form. For example, out of the box I could basically get max D out of the pearl, but I noticed if you don't release it perfectly flat it will flatten out for you and try to shape a line. It basically, to me, is a disc that will stay fairly accurate even if you aren't, and when you've got the Pearl basically PIN POINT accurate to where you are aiming it, you need to step up to a heavier disc with a bigger rim.
I've never even held a ruby though, cause I'm set on putters right now.
TD Rush| Valkyrie|FD Jackal|River|Diamond|Warship|MIDARi|Fuse|Pearl|Soft Anode|JOKERi|Swan2